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>
had abandoned; this episode was later remade as Queen of the Nile (The Twilight Zone) in which the "beauty" is shown to be a femme fatale who uses murder and black magic to drain the lifeforce out of males to remain young. {The last episode was re-made into a 1990 movie "Eternity" in which a woman uses sex with younger men to drain the lifeforce out of males to remain young [Imdb on Queen of the Nile] Immortal Man (Strange Adventures #177, June 1965) Gaining immortality from the same meteorite that granted longevity to Vandal Savage, the Immortal Man instantaneously reincarnates when he dies. Conrad Nomikos (…And Call Me Conrad, 1966 by Roger Zelazny. Later expanded to the novel This Immortal). The original Star Trek Series had several episodes with immortality beings:Miri;The Squire of Gothos' Arena;The Alternative Factor; Who Mourns for Adonais and a sequel Pilgrim of Eternity; Wolf in the Fold;The Omega Glory;The Gamesters of Triskelion; Return to Tomorrow; Assignment: Earth;Plato's Stepchildren; Let That Be Your Last Battlefield;The Mark of Gideon;Requiem for Methuselah. Star Trek animated cartoon series The Lorelei Signal Kirk, Spock and McCoy are captured by beautiful femme fatales who use science to drain the lifeforce out of the male crewmen to remain young Favorite Son (Star Trek: Voyager) Ensign Kim finds his life energy drained by an all female society. Captain Scarlet (1967), in the British Supermarionation science fiction television series Captain Scarlet and the Mysterons, was turned nearly immortal (the actual term is "virtually indestructible;" the process which makes him so is called "retro-metabolism") after undergoing Mysteronization, from which he either escaped or was released. Captain Black, also in this series, is presumably another Mysteronized immortal; however, he remains under Mysteron control. Gilgamesh the immortal (1969), from the Argentine comic of the same name, was an ancient king turned immortal by advanced technology. Ra's al Ghul (Batman #232, 1971) Ra's maintained an unnaturally long life through the use of natural phenomena known as Lazarus Pits. Other characters given some measure of immortality by the Lazarus Pit include al Ghul's father Sensei, his daughters Talia al Ghul and Nyssa Raatko, and his agent Whisper A'Daire. In a 1973 episode of "Mission Impossible" aka ["The Fountain"] the IMF team tricks a Crime syndicate boss into thinking he was discovered a group of Immortals with a Fountain of Youth. Kolchak The Night Stalker (1972 film)in which a serial killer is a centuries-old vampire; Kolchak The Night Strangler (film) features a 140 year old physician who uses an elixir from murder victiums to remain young Kolchak: The Night Stalker TV series had several episodes of immorality: "The Ripper" [A seriel killer is a Jack the Ripper](1974); "Bad Medicine" [A shape shifting shaman/killer); "Demon In Lace" succubus/femme fatale who uses murder and black magic to drain the lifeforce out of males to remain immortal; "The Youth killer" in which the "beauty" is shown to be a femme fatale who uses murder and black magic to drain the lifeforce out of males to remain young . Ark II 1976 last episode "Orkus" where the crew rapidly ages after encountering a group of Immortals Casca Longinus (Casca: The Eternal Mercenary, 1979) Casca is the Roman soldier who plunges his spear into the side of Jesus on the cross at Golgotha and is cursed to wander the world forever until the two should meet again. Otherworld (TV series) episode {"Paradise Lost"] in which beautiful femme fatales who use science to drain the lifeforce out of males to remain young Nathan Young (Misfits) Nathan is given community service where he is caught up in
</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.