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>
Noël Corbu Noël Corbu (27 April 1912 – 20 May 1968) is best known as a former restaurateur in the Southern French village of Rennes-le-Château who, between 1955-1962 circulated the story that the 19th-century French priest Bérenger Saunière discovered the treasure of Blanche of Castile. Corbu changed his story about Saunière in 1962 (see below). Early life Born on 27 April 1912 in the 7th arrondissement of Paris to Désiré-Victor-Henri Corbu and Marguerite-Marie Corbu ( Rousseau), the granddaughter of François-de-Sales-Narcisse Rousseau (1810-1866), an attorney based in Clamecy, Nièvre who, in the aftermath of the French coup d'état of 1851, had been forced to flee into exile into Belgium to escape deportation to Cayenne. Corbu had an elder brother, ten years his senior named Charles-Pierre Corbu, an airline pilot employed by the Société Générale des Transports Aériens, who died alongside his mechanic, during a test flight of a commercial aircraft carrying no passengers at Le Bourget Airport, on 10 December 1927. The young Noël Corbu lived in Morocco due to his father being an attaché at the Embassy there, before obtaining the degree of Doctor of Science in Paris. While living in Perpignan, Corbu met his future wife, Henriette Coll, ten years his senior and a native of the town who was then living at 16, rue J. Tastu, where she ran her business of selling poultry, eggs and cheese. The couple married on 21 January 1935. In the following years, Corbu set up a pasta factory which he named les pâtes Claire after his eldest child, his daughter Claire, situated at route d'Elne, Perpignan. By the end of 1942, Perpignan became occupied by German troops. Rennes-le-Château It was soon afterwards that Corbu decided to send his two children, his daughter Claire and her younger brother, to a more remote and less accessible place, to the village of Bugarach. Corbu published his detective novel, Le Mort cambrioleur ("The Burglar Dead") in 1943. Through the intermediary of his children's school teacher (once Marie Dénarnaud's lodger), Corbu found out that Marie Dénarnaud was selling her estate in Rennes-le-Château. After two years of hesitation, Marie Dénarnaud finally agreed to sell her property en viager to the Corbus and by her Holographic will dated 22 July 1946, she named Corbu and his wife her sole legatees. Marie Dénarnaud could not afford to keep up her estate, which was in need of repairs and she had run into serious debts (that were settled by Noël Corbu upon purchase). The property comprised the Villa Bethania, the Tour Magdala, an Orangery, and the Belvedere that connects the Tour Magdala to the Orangery. In 1950 Corbu returned to Morocco hoping to set up a sugar refinery, without success. When Marie Dénarnaud died in 1953, Corbu inherited her archives relating to Bérenger Saunière. During Easter 1955 Corbu turned the Villa Bethania into a Hotel (called L'hôtel de la Tour) and opened a restaurant located underneath the belvedere that connects the Tour Magdala to the Orangery (Corbu installed the windows). Later during the 1990s, the Villa Bethania was turned into a hotel again. In January 1956, the local newspaper La Dépêche du Midi serialised an interview with Corbu in who claimed that Father Saunière discovered the treasure of Blanche of Castile, and which 'according to the archives' consisted of 28,500,000 gold pieces. This was the treasure of the French crown assembled by Blanche de Castile to pay the ransom of Saint Louis, a prisoner of the Saracens, the surplus of which she had hidden at Rennes-le-Château. Saunière had only found one part of it, so it was necessary to continue his
</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.