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>
Csák (genus) Csák was the name of a gens (Latin for "clan"; nemzetség in Hungarian) in the Kingdom of Hungary. Origin The Gesta Hunnorum et Hungarorum ("Deeds of the Huns and Hungarians") records that the ancestor of the family was Szabolcs, son of chieftain Előd, the leader of one of the seven Magyar tribes. The family was probably connected to the Árpád dynasty. Their ancient possessions were located around the Vértes Mountains in Transdanubia; Csákvár ("castle of Csák") and Csákberény villages still bear their name. The family was named after Szabolcs' grandson who had a fortress built on his possessions. The most prominent members of the family were Máté Csák III and Ugrin Csák who were powerful aristocrats of the Kingdom of Hungary from the 1290s. The gens divided into 12 branches and several families in the course of the centuries. The Csáky de Mihály family also belongs to the Csák gens. Notable members of the clan Csák, ancestor and denominator of the gens Csák Ugrin (12th century), ispán Ugod branch The numbering means within the branch. Luka Demetrius I (fl. 1217–1254), judge royal (1233–1234; 1242–1245) Ugod (fl. 1264–1270) Demetrius II (fl. 1277–1285; d. before 1287), wildgrave of Bakony (1281); married N Kőszegi Blessed Maurice (d. 20 March 1336), Dominican friar Csák II (d. before 1309), last male descendant Kunigunda or Kingus (fl. 1317), married Julius II Rátót (?) Michael (fl. 1270–1277), ispán of Nyitra County (according to Pál Engel) Unknown daughter (fl. 1232), married Csépán II Győr Csák I (fl. 1264–1270), wildgrave of Bakony (1270) (?) Adam Paul Peter (fl. c. 1305) Kisfalud branch Ugrin (d. 1204), archbishop of Esztergom, maybe son of ispán Ugrin Nicholas, his testament of 1231 mentions archbishop Ugrin as his pater, but more likely that he was Nicholas' uncle Újlak branch The numbering means within the branch. Bás I, ispán Bás II Csák John (d. before 1324), judge royal (1311–1314) Ugrin II, archbishop of Spalato (1244–1248) Pós, master of the treasury for prince (1227–1233) then King Béla IV (1235), ban of Severin (1235) Ugrin III (c. 1240–1311), oligarch, judge royal, Voivode of Transylvania, Ban of Szörény, Macsó, master of the treasury, master of the horse Nicholas (d. 1359), judge royal (1359) Ladislaus (d. before 1364), last member Ugrin I (d. 1241), archbishop of Kalocsa, killed in the battle of Mohi Trencsén branch The numbering means within the branch. Matthew I (d. 1245/1249), first known member of the branch, master of the treasury (1242–1245) Mark I, ispán of Hont County (1247) Peter II (fl. 1279–1290) Stephen II (fl. 1279–1307) Mark II (fl. 1309) Peter III (fl. 1309–1332; d. before 1350), master of the horse (1314–1317) Ladislaus (fl. 1332) Peter IV (fl. 1332) Dominic (fl. 1332–1359), ancestor of the Dombai family Stephen III (fl. 1323–1329) Unknown daughter, married Roland III Rátót Unknown daughter, married Jakab Cseszneky (1) and Lőrinte from the kindred Lőrinte (?) Stephen I, master of the stewards (1275–1276; 1277–1278) Matthew II (d. 1284), palatine, voivode of Transylvania, judge royal, ban of Slavonia, master of the treasury Peter I (d. 1284), palatine, master of the stewards Matthew III (1260/65 – 1321), master of the horse (1293–1296), palatine (1296–1297, 1302–1310) and master of the treasury (1310–1311) Matthew IV (d. before 1318), married Gutha N Matthew V, married Kunigunda James Unknown daughter, wife of Desoh Csák (fl. 1291–1300), bearer of the sword (1293) Unknown daughter, wife of Zdislav Sternberg and mother of Stephen the Bohemian, Lord of Trencsén (1321) Kendertó branch The numbering means within the branch. Nicholas I Matthew I (fl. 1263) Nicholas II (fl. 1315–1336; d. before 1367), died without male descendants Matthew II
</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.