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>
Birdcatcher (horse) Birdcatcher (1833–1860), or Irish Birdcatcher, was a Thoroughbred racehorse and a leading sire. Breeding Foaled in 1833 at the Brownstown Stud, in Ireland, Birdcatcher was by the Irish Thoroughbred stallion Sir Hercules, who lost only once, in the St Leger Stakes in 1829. Birdcatcher's dam, Guiccioli, who had a successful career as a racehorse, foaled the chestnut colt when she was 10. She was also the granddam of another well-known racehorse, Selim, and dam to a full-brother of Birdcatcher, Faugh-a-Ballagh. Description Birdcatcher was said to have been small, only 15.3 hh, but he had an expressive head, a well-arched neck, and nicely sloping shoulder. His back was short and compact, his loin was deep, and his hindquarters were strong and muscular. His forearms and thighs were large and strong, and attached to fine, light legs. He had an elastic stride, that no doubt helped him to win as many races as he did. Birdcatcher had a large star and narrow blaze, white halfway up to the hock on the left hind. He also had ticking, or white hairs scattered throughout his flanks and at the base of the tail. He passed this trait onto many offspring, including Daniel O'Rourke, so often that the marking became to be called to Birdcatcher ticks. This marking differs from the small white spots known as Bend-Or spots. Racing career William Disney bought the colt, and raced him once as a 2-year-old before beginning seriously as a three-year-old. The young Thoroughbred raced only at Curragh throughout his career. He broke his maiden at the Madrid Stakes, and then won the Milltown Stakes and fourteen-furlong Peel Stakes, and came second in the ten-furlong Wellington Stakes. His four-year-old career was also quite impressive, with a win in the Kildare and Wellington Stakes (where he walked over the finish line). He finished second after Harkaway in the Northumberland Handicap. In his final race, the Doris Stakes, Birdcatcher was unplaced. The chestnut colt ended his career with 15 starts and 7 wins, before the horse went on to have a successful breeding career. Race record Two-year-old Paget Stakes at the Curragh, unplaced Three-year-old ~raced exclusively at the Curragh Madrid Stakes: won, beating Maria (b.f. by Sir Hercules), Langford (br.c. by Sir Hercules), Quicksilver (b.c. by Memnon), and five other entries Miltown Stakes: won, beating Cushneiche (ch.c. by Roller) Wellington Stakes: came 2nd, after Maria, beating Whim (gr.f. by Drone), and eight others Challenge Stakes: 2nd, after Whim, beating Maria November Mulgrave Handicap: 3rd, after winner Water Witch (bl.f. by Sir Hercules) and Blackfoot (b.c. by Young Blacklock), beating Fusileer (ch.c. by The Colonel), Whim, and three other entries October Mulgrave Handicap: unplaced, won by Langford followed by Whim Four-year-old ~raced exclusively at the Curragh Kildare Stakes: won, beating Thump (b.c. Humphrey Clinker), Aigirio (gr.c. Roller), Quicksilver, and two others King's Plate: Croughpatrick (br.c. Blacklock) and five others Wellington Stakes: won (walked over) April Challenge Stakes: 2nd, after Blackfoot, beat four others King's Plate: 2nd to Freney King's Plate: 3rd, after winner Harkaway, and Gipsy (bl.f. Sir Hercules) September Challenge Stakes: 3rd, after winner Mercury (gr.c. Drone), and Austerlitz (br.c. Napoleon) Wellington Stakes: unplaced, won by Harkaway Doris Stakes: unplaced, won by Maria Stud record The stallion retired to stud at his place of foaling, Brownstown, beginning his breeding career as a five-year-old in 1838. Birdcatcher's first crop of foals did well, and he was moved to Barrow's Paddock in Newmarket for 1846 and 1847, before he was leased for 1848 and 1849 to Easby Abbey in Yorkshire. The stallion then returned home to Brownstown for 1850, and
</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.