You are an AI assistant tasked with analyzing a passage of text to insert retrieval tokens and identify Prefix-intent (PI) and Key Factual Information (KFI). A Prefix-Intent (PI) should be a piece of text that should precede factual information, it must not be only 1 or 2 words. Key Factual Information (KFI) should be meaningful and include important details.

Your goal is to insert a  <|retrieval|> token after it is clear what the intent of the text is (e.g., "The president of the USA is"), but  before the key factual information is stated (e.g., "Joe Biden"). Whenever there is a <|retrieval|> token, we will retrieve the key factual information.

Here is the passage you will be working with:

<passage>
authors 700-893.....17th/18th century (colonial period) 991-3390....19th century authors 3500-3549...Authors 1900-1960 3550-3576...Authors 1961-2000 3600-3626...Authors 2001- 8001-8649.....Canadian literature 8001-8039....General 8041-8057....Canadian literary criticism (as a subject) 8061-8227....History and criticism of Canadian literature 8111-8117....By period 8129-8133 ...By region 8139-8227....Special forms 8139-8159....Poetry 8179-8199....Prose and prose fiction 8231-8379....Collections of Canadian literature 8400-8649....Individual authors PT - Germanic literature 1-4897...........German literature 1-80............Literary history and criticism 83-(873)........History of German literature 175-230........Medieval 236-405........Modern 500-597........Poetry 605-709........Drama 711-871........Prose (881)-(951)...Folk literature 923-937......Faust legend 1100-1479.......Collections 1100-1141......General 1151-1241......Poetry 1251-1299......Drama 1301-1360......Prose 1371-(1374)....Early to 1950. Old and Middle High German. 1375-1479......Middle High German 1501-2688.......Individual authors or works 1501-1695......Middle High German, ca. 1050-1450/1500 1701-1797......1500-ca. 1700 1799-2592......1700-ca. 1860/70 1891-2239......Goethe 1891-2017.....Works 2026-(2039)..Translations (2044)-2239...Biography and criticism 2600-2653......1860/70-1960 2660-2688......1961-2000 2700-2728......2001- 3701-3971.......Provincial, local, colonial, etc. 3701-3746......East Germany 4801-4897.......Low German literature 5001-5980........Dutch literature 5001-5348.......Literary history and criticism 5001-5112......General 5121-5185......Special periods 5201-5243......Poetry 5250-5295......Drama 5300-5348......Prose (5351)-5395.....Folk literature 5398............Juvenile literature (General) 5400-5547.......Collections 5400-5409......General 5410-5414......Translations 5420-5460......Special periods 5470-5488......Poetry 5490-5515......Drama 5517-5547......Prose 5555-5881.36....Individual authors or works 5555-5595......Medieval 5600-5739......16th-18th centuries 5620-5637.....Jacob Cats 5700-5732.....Joost van den Vondel 5800-5880......1800-1960 5881-5881.36...1961-2000 5882-5882.36...2001- 5901-5980.......Provincial, local, foreign 6000-6466.36.....Flemish literature since 1830 6000-6199.......Literary history and criticism (6200)-(6230)...Folk literature 6250............Juvenile literature (General) 6300-6397.......Collections 6400-6466.36....Individual authors or works 6500-6592.36.....Afrikaans literature 6500-6530.......Literary history and criticism (6540)-6545.....Folk literature 6550-6575.......Collections 6580............Local 6590-6592.36....Individual authors or works 7001-7099........Scandinavian literature 7001-7099.......General 7001-7087......Literary history and criticism (7088)-(7089)...Folk literature 7090-7099......Collections 7101-7338........Old Norse literature: Old Icelandic and Old Norwegian 7101-7211.......Literary history and criticism 7170-7176......Poetry 7177-7211......Prose 7181-7193.....Sagas 7195-7211.....Scientific and learned literature 7220-7262.5.....Collections 7230-7252......Poetry 7255-7262.5....Prose 7261-7262.5...Sagas 7263-7296.......Individual sagas and historical works 7298-7309.......Religious works 7312-7318.......Scientific and learned literature 7326-7338.......Individual authors or works before 1540 7351-7550........Modern Icelandic literature 7351-7418.......Literary history and criticism (7420)-(7438)...Folk literature 7442............Juvenile literature (General) 7450-7495.......Collections 7500-7511.......Individual authors or works 7500-7501......16th-18th centuries 7510-7511......19th-20th centuries 7512-7513......21st century 7520-7550.......Provincial, local, foreign 7581-7599........Faroese literature 7581-7592.......Literary history and criticism 7593-7596.5.....Collections 7597............Local 7598-7599.......Individual authors or works 7601-8260........Danish literature 7601-7869.......Literary history and criticism 7721-7762......Special periods 7770-7794......Poetry 7800-7832......Drama 7835-7869......Prose (7900)-7930.....Folk literature 7935............Juvenile literature (General) 7945-8046.......Collections 7975-7994......Poetry 7999-8020......Drama 8021-8046......Prose 8050-8176.36....Individual authors or works 8050...........Medieval 8060-8098.....16th-18th centuries 8070-8094.5...Ludvig Holberg 8100-8167.....19th century 8102-8120....Hans Christian Andersen 8145-8157....Adam Gottlob Oehlenschläger 8174-8175.....1900-1960 8176-8176.36...1961-2000 8177-8177.36...2001- 8205-8260......Provincial, local, foreign 8301-9155.......Norwegian literature 8301-8574......Literary history and criticism (8420)-8456...Special periods 8460-8489.....Poetry 8500-8534.....Drama 8540-8574.....Prose (8600)-(8637)...Folk literature 8640...........Juvenile literature (General) 8650-8733......Collections 8675-8695.....Poetry 8699-8718.....Drama 8719-8723.....Prose 8750-8951.36...Individual authors or works 8750-8775.....16th-18th centuries 8800-8942.....19th century 8851-8900....Henrik Ibsen 8949-8950.....1900-1960 8951-8951.36...1961-2000 8952-8952.36...2001- 9000-9094......Landsmaal or New Norwegian 9000-9019.....Literary history and criticism 9025-9055.....Collections 9064-9094.....Individual authors 9100-9155......Provincial, local, foreign 9201-9999.......Swedish literature 9201-9499......Literary history and criticism 9320-9370.....Special periods 9375-9404.....Poetry 9415-9449.....Drama 9460-9499.....Prose (9509)-(9542)...Folk literature 9544...........Juvenile literature (General) 9547-9639......Collections 9565-9570.....Translations 9580-9599.....Poetry 9605-9625.....Drama 9626-9639.....Prose 9650-9876.36...Individual authors or works 9650-9651.....Medieval 9674-9715.....16th-18th centuries 9725-9850.....19th century 9759-9771....Selma Lagerlöf 9800-9817....Johan August Strindberg 9820-9838....Esaias Tegnér 9870-9875.....1900-1960 9876-9876.36...1961-2000 9877-9877.36...2001- 9950-9999......Provincial, local, foreign PZ - Fiction and juvenile belles letters 1-90....Fiction and juvenile belles lettres 1-4....Fiction in English 5-90...Juvenile belles letters References Further reading Full schedule of all LCC Classifications List of all LCC Classification Outlines P
</passage>

Follow these steps to complete the task:

1. Inserting retrieval tokens:
   a. Read through the text carefully.
   b. Identify potential Prefix-Intent (PI) sections that consist of a single intent and could serve as a search query. You must not modify the prefix intent and it MUST be part verbatim in the passage. It cannot be single or only a few words.
   c. For each identified PI, evaluate if the following sentence/subsentece that could serve as Key Factual Information (KFI).
   d. Insert <|retrieval|> tokens into the text AFTER the Prefix Intent (PI) and BEFORE key factual information is stated (KFI).
   e. Key Factual information should not intersect with Prefix Intent.

2. Identifying Prefix-Intent (PI) and Key Factual Information (KFI):
   a. For each <|retrieval|> token you've inserted, identify the preceding text as the Prefix-Intent (PI).
   b. Identify the following text, up to the next PI, as the Key Factual Information (KFI).
   c. Ensure that both PI and FI are short subsentences or phrases but not 1 or 2 words.

3. Insert <|start-PI|>,<|end-PI|>, <|start-KFI|>, <|end-KFI|>.
   a. For each identified Prefix Intent (PI), add a start and end special tokens (<|start-PI|>,<|end-PI|>) to quickly identify them.
   b. Do the same for the Key Factual Information (KFI) (<|start-KFI|>, <|end-KFI|>)
   c. Ensure that the very first PI in the passage is preceded by <|start-PI|>.
   d. Double-check that every PI and KFI is properly enclosed in these tags.

4. Describing ideal retrieved information:
   a. Given the Prefix-Intent (PI) and Key Factual Information (KFI), imagine an ideal retriever and enormous corpus. 
   b. Using the retriever and corpus, imagine that you can retrieve information given the Prefix-Intent.  
   c. Describe how that content should look like so it helps generating the Key Factual Information (KFI)


5. Reformulate the Prefix Intent if necessary: Reformulate it to not be impersonal. This means that if the subject it is not identified (e.g. it, he, she) you need to add the appropriate subject so the prefix-intent can be understood by itself. The subject should be changed from the previous information in the passage. Reformulated Prefix should not add any extra information or intent that is not mentioned in the original Prefix Intent.


6. Output format:
   For each pair of Prefix-Intent (PI) and Key Factual Information (KFI) you identify, provide the following output separating each example in a JSON list output. Ensure that it is actually a JSON.

   - Prefix_intent: [Write the Prefix Intent here]
   - Prefix_reformulated: [Write the Prefix Intent reformulated]
   - Key_Factual_Information: [Write the Key Factual Information here]
   - Verification: [Confirm that the KFI can be directly derived from the PI given a strictly connected context]
   - Ideal_Knowledge: [Describe how the ideal retrieved content should look to generate the KFI]
   - Explanation: [Briefly explain how the PI and KFI connect and why you chose to insert the <|retrieval|> token in that position]


7. Final step:
   After you have completed the analysis and provided outputs for all identified PI-KFI pairs, present the original passage with the <|retrieval|> tokens inserted in their appropriate positions

Here's an example of the expected output format:

Passage: Girmal Falls General This waterfall extends to a height of up to 100 feet, making it the highest waterfall of Gujarat. The picturesque beauty of this site makes it popular among visitors and people of the region alike. The water swiftly falls from a great height, creating a fog like condition that’s eye catching. The government of this state is working on many projects to make this place an ideal picnic spot and a tourist attraction. The fall comes to its best form at the time of monsoon and provides an immensely striking appearance. Some of the best natural features of Gujarat can be explored in this place. This place is a nice and refreshing retreat for any traveler.

```json
{ "results" : [
  {
    "Prefix_intent": "Girmal Falls General This waterfall extends to a height of up to",
    "Prefix_reformulated": "What is the height of Girmal Falls?",
    "Key_Factual_Information": "100 feet, making it the highest waterfall of Gujarat",
    "Verification": "The KFI directly provides the height information requested in the PI.",
    "Ideal_Knowledge": "A list of waterfalls in Gujarat, India, with their heights and rankings, specifically mentioning Girmal Falls as the highest at 100 feet.",
    "Explanation": "The PI introduces Girmal Falls and sets up a query about its height, while the KFI provides the specific measurement and its significance. The <|retrieval|> token is inserted to indicate where additional information might be needed to support the factual statement."
  },
  {
    "Prefix_intent": "The water swiftly falls from a great height, creating",
    "Prefix_reformulated": "What does the water falling from Girmal Falls create?",
    "Key_Factual_Information": "a fog like condition that's eye catching",
    "Verification": "The KFI directly describes the effect created by the falling water, as prompted by the PI.",
    "Ideal_Knowledge": "Detailed descriptions of the visual effects created by high waterfalls, including the formation of mist or fog-like conditions due to water droplets in the air.",
    "Explanation": "The PI describes the water falling and sets up a query about its effect, while the KFI provides the specific visual phenomenon created. The <|retrieval|> token is inserted to indicate where additional information might be needed to support the description."
  },
  {
    "Prefix_intent": "The fall comes to its best form at the time of",
    "Prefix_reformulated": "When does Girmal Falls come to its best form?",
    "Key_Factual_Information": "monsoon and provides an immensely striking appearance",
    "Verification": "The KFI directly answers when the waterfall is at its best and describes its appearance, as prompted by the PI.",
    "Ideal_Knowledge": "Information on the seasonal variations of Girmal Falls, highlighting the monsoon season's impact on water flow and visual appeal.",
    "Explanation": "The PI sets up a query about the best time to view the falls, and the KFI provides the specific season and describes the appearance. The <|retrieval|> token is inserted to indicate where additional information about seasonal changes might be needed."
  }],
"Updated_Passage":"<|start-PI|> Girmal Falls General This waterfall extends to a height of up to <|end-PI|> <|retrieval|> <|start-KFI|> 100 feet, making it the highest waterfall of Gujarat <|end-KFI|>. The picturesque beauty of this site makes it popular among visitors and people of the region alike. <|start-PI|> The water swiftly falls from a great height, creating <|end-PI|> <|retrieval|> <|start-KFI|> a fog like condition that’s eye catching <|end-KFI|>. The government of this state is working on many projects to make this place an ideal picnic spot and a tourist attraction. <|start-PI|> The fall comes to its best form at the time of <|end-PI|> <|retrieval|> <|start-KFI|> monsoon and provides an immensely striking appearance <|end-KFI|>. Some of the best natural features of Gujarat can be explored in this place. This place is a nice and refreshing retreat for any traveler."
}

```
8. Final check:
  a. Review the Updated_Passage to ensure all PIs and KFIs are properly tagged.
  b. Verify that the first PI in the passage starts with <|start-PI|>.
  c. Make sure there are no missing or misplaced tags.
 
Remember to analyze the entire passage, identify all relevant PI-KFI pairs, and provide the output for each pair as specified. After completing the analysis, present the original passage with the <|retrieval|> tokens inserted in their appropriate positions as part of a new key in the JSON file. Only Ouput the JSON File.