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>
beautiful femme fatale who uses black magic to drain the lifeforce out of males to remain young Ashabero, the 2000 year old titular character of José Gómez de Arteche's 1875 novel A Spanish Soldier Twenty Centuries Old. Ahsabero is an Iberian who has been a soldier since he was born around 50 B.C. Ayesha, the 2000-year old titular character of H. Rider Haggard's 1886 novel She: A History of Adventure. Dorian Gray, who stays young while his painted portrait ages terribly in Oscar Wilde's 1890 novel The Picture of Dorian Gray. Valdar, the hero of Valdar the Oft-Born: A Saga of Seven Ages (1895) by George Griffith is immortal by repeated reincarnation. Emilia Marty in the 1922 play The Makropulos Affair, later adapted into an opera by Leoš Janáček, is a 300 year old opera singer on whom a potion of immortal life had been tested when she was a child. Anton York (Conquest of Life, Thrilling Wonder Stories August 1937 by Eando Binder) Anton York was injected with a chemical formula that would halt his aging until the universe was double its current age. At that point he could presumably produce and drink a second dose, if he so desired. A series of Anton York stories were written which were later collected in the anthology Anton York, Immortal in 1965. Shining Hawk, (The Gnarly Man June 1939 by L. Sprague de Camp) A Neanderthal Man over 50,000 years old who is living as a circus artist. Robert Hedrock, The Weapon Shops of Isher 1941 and The Weapon Makers 1943 by A. E. van Vogt. A man accidentally becomes immortal, and secretly runs an organization that provides exclusively self-defensive weapons to people and runs a parallel justice system. Woodrow Wilson Smith, also known as Lazarus Long, Methuselah's Children 1941 by Robert A. Heinlein. A fairly early 'Howard', Smith becomes the Senior of the Howard families, who are named for Ira Howard (founder of a project to extend the human lifespan). He is mentioned in four other Heinlein novels, most notably Time Enough for Love. Vandal Savage (Green Lantern vol. 1 #10, Winter 1943) Caveman Vandar Adg was bathed in the radiation of a mysterious meteorite, granting him intellect and immortality. In subsequent years, he claims to have been or advised dozens of world leaders. Raimon Fosca, the cursed subject of Simone de Beauvoir's 1946 novel All Men Are Mortal. Nero (1947). The main protagonist of The Adventures of Nero is a regular man. In "De Bronnen van Sing Song Li" ("The Sources of Sing Song Li") (1951) he drinks an elixir which gives him eternal life. In "De Wallabieten" (1968) he drinks a pill which makes people 1.000 year old and in "De Nerobloemen" ("The Nero Flowers") (1978) he drinks another elixir that gives him eternal life. A wizard in "Zongo in de Kongo" ("Zongo in the Kongo") (1970) gives him immortality as well. Gilbert Nash, the hero of Wilson Tucker's The Time Masters (1953, revised 1971) is the present-day name of an immortal alien who has been stranded on Earth for several thousand years - prior aliases include Gilgamesh. Jadis, the White Witch (The Magician's Nephew, The Lion, the Witch and the Wardrobe) is an inhabitant of Charn, but is brought in to Narnia. She has survived the destruction of Charn by putting herself in eternal sleep, but then eats a silver apple from the Western Wild, and becomes immortal, but is later killed by Aslan. The Twilight Zone Long Live Walter Jameson [1960] has an 2,000 year old immortal man Walter Jameson killed by the elderly wife he
</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.