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>
the family must be assumed not to have been counted amongst the gentry of Devon at that time, or to have settled in the county after that date. The same arms as used by the Devon family were however recorded as adopted in 1606 by a Gloucestershire family called "Stephens", of Chavenage House, Eastington, which family rose to considerable prominence during the Civil War as Parliamentarians. William Stevens (d.1648) of Great Torrington, apparently a younger son of the Stevens family of Chavenage House. Henry Stevens de Velstone, son and heir of William Stevens of Great Torrington. The earliest known seat of the Stevens family in Devon was Vielstone, now a farmhouse in 2013 used as a care home, in the parish of Buckland Brewer (of which the Rolle family of Stevenstone were lords of the manor) about five miles south-west of Great Torrington. He married Judith Stevens (d.1676), daughter of John Hancock of Combe Martin, as is recorded on the ornate mural monument to Judith Stevens (d.1676) on the east wall of the south aisle of Great Torrington parish church. Clearly the Stevens family were even then of some high standing in view of the prominent positioning of the monument in this large and important church. One of their sons, John Stevens (d.1674) predeceased his father, as is revealed by his grave-slab under his father's mural monument in Great Torrington Church. Henry appears to have had two sisters, both listed passim in the Visitation of Devon as "daughter of William Stevens of Great Torrington": Susannah Stevens (d.1694/5), who married firstly Alexander Rolle (d.1660) of Tawstock, a younger son of a junior line of the Rolles of Stevenstone. She married secondly in 1664, as his third wife, Sir John Chichester (1598-1669) of Hall, in the parish of Bishops Tawton, and had issue from both marriages. Mary Stevens (d.1669), buried at St Giles in the Wood, married in 1639 Henry Rolle of Beam (1605-1647), near Great Torrington, who in 1642 inherited from his infant cousin Denys Rolle (1638-1642) the Stevenstone estates. The marriage was childless and his heir was his cousin Sir John Rolle (d.1706), KB. Richard I Stevens, son of Henry Stevens de Velstone. He married a certain Elizabeth, and had two sons: Henry Stevens (1689-1748) of Cross, in the parish of Little Torrington, described in his will as "of Smithcott" in the parish of Frithelstock, but who built the existing mansion of Cross between 1744 and 1748. He married Christiana Maria Rolle (1710-1780), a daughter of John Rolle (1679-1730), MP, of Stevenstone, in the nearby parish of St Giles in the Wood, and sister of Henry Rolle, 1st Baron Rolle (1708-1750). Portraits of Christiana and of her brothers John Rolle Walter (1712-1779), and Denys Rolle (d.1797), successively owners of the Stevenstone estates, were painted by Thomas Hudson and were given in the early 1900s by Lord Clinton to the Great Torrington Town Lands and Poors Charity. They are on public display in Great Torrington townhall. The Rolles of Stevenstone were the largest landowners on Devon. Henry Stevens's heir was his son Henry Stevens (1739-1802), who married Sarah Bridget Marwood (who married secondly John Inglett Fortescue of Buckland Filleigh), but who died without progeny leaving as heir his sister Christiana Stevens (1743-1828) who had married in 1779 Rev. Thomas Moore (1740-1802), vicar of Bishops Tawton. Richard Stevens (1702-1776), MP, of Winscott (see above). Moore-Stevens Thomas Moore-Stevens (1782-1832) Thomas Moore-Stevens (1782-1832), of Vielston, Buckland Brewer, later of Cross, was the son of Rev. Thomas Moore (1740-1802), vicar of Bishops Tawton by his wife (whom he had married in 1779) Christiana Stevens (1743-1828),
</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.