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>
"Production plan") has been totally made up, but again, some details involved have been taken from Karamzin (Mikhail Garaburda's negotiations with Grozny in 1573, among others). Apart from Karamzin's History Tolstoy used, albeit to a lesser extent, Tales of Prince Kurbsky, published in 1831 by N.Ustryalov. Kurbsky's letters in Scene 2, Act 1, present a mosaic of his real letters, the 1679 one featuring most prominently. In the Act 4 the Ivan Grozny synodic text reading quotes a real document. The play's major characters are historical figures, most of the minor ones (servants, stolniks) are fictional. One notable exception is a Pskovian messenger, a figure featuring in historical chronicles. The Boyar duma members have names of real people, one exception being Sitsky, a totally fictitious part. Inaccuracies and inventions According to Tolstoy, the action of drama takes place in 1584, the year of Ioann's death. Yet, Ivan's murdering his son, the abdication, the siege of Pskov, the fire in Aleksandrovskaya sloboda all relate to the second half of 1581. Tolstoy was improvising a lot when it came to motives and undercurrents, occasionally creating links between things historians thought were unrelated. Having greatly increased the historical role of Boris Godunov, he's made him take part in several events had no bearing to. According to I.Yampolsky, Boris' speech in Duma, the clash with Sitsky, addressing Tsar Ivan on behalf of Duma asking for his return to the throne, his opposition to the monarch's marrying Princess of Hastings and unwilling support for tsarina Maria, Ivan's advise for Fyodor to always listen to what Boris would say, - were all author's artistic inventions. The idea of expanding it into a trilogy came to Tolstoy while he was working on Tsar Fyodor Ioannovich, but, as I.Yampolsky notes, The Death of Ioann the Terrible gives the impression some future development of Godunov's character already having been on author’s mind. The appearance of Mikhail Bityagovsky in the play, the figure which according to historical sources would come upon the scene many years later, could be seen as pointing to this, too. Besides, Tolstoy created new logical threads between Bityagovsky's taking part in the conflict between Boris and boyars, his agitation of people against Shuisky and Belsky - to the murder of Dmitry. Production history The Death of Ivan the Terrible was first performed at the Alexandrinsky Theatre in Saint Petersburg in 1867. It was not a success, due to the lead role having been given to a comic actor. The world-famous Moscow Art Theatre began its second season with a production of the play, which opened on 29 September 1899. It was directed by the seminal theatre practitioner Constantin Stanislavski, who also played the lead role initially. When Stanislavski fell ill after the first few performances, he was replaced by Vsevolod Meyerhold. The play received its first New York production in 1904, which opened on 1 March at the New Amsterdam Theatre on Broadway in a translation by S. R. DeMeissner. References Sources Banham, Martin, ed. 1998. The Cambridge Guide to Theatre. Cambridge: Cambridge UP. . Benedetti, Jean. 1999. Stanislavski: His Life and Art. Revised edition. Original edition published in 1988. London: Methuen. . Braun, Edward. 1995. Meyerhold: A Revolution in Theatre. Rev. 2nd ed. London: Methuen. . Eriksen, Gordon, Garrard MacLeod, and Martin Wisneski, ed. 1960. Encyclopædia Britannica 15th Edition. Volume 11. Hartnoll, Phyllis, ed. 1983. The Oxford Companion to the Theatre. 4th ed. Oxford: Oxford UP. . Moser, Charles A., ed. 1992. The Cambridge History of Russian Literature. Rev. ed. Cambridge: Cambridge UP. . Tolstoy, Aleksey Konstantinovich (Alexis K. Tolstoi). 1926. The Death of Ivan
</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.