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>
Spitfire to Eurofighter: 45 Years of Combat Aircraft Design. Shrewsbury, Shropshire, UK: Airlife Publishing Ltd., 1990. . Burns, J.G. and M. Edwards. "Blow, blow thou BLC wind". Flight International Vol. 99, No. 3227, 14 January 1971, pp. 56–59. Buttler, Tony. "Strike Rivals: The ones that 'lost' when the TSR.2 'won'." Air Enthusiast, No. 59, September/October 1995, pp. 12–23. Calvert, Denis J. and David Donald. "Blackburn Buccaneer". Wings of Fame, Volume 14. London: Aerospace Publishing, 1999. pp. 34–103. . ISSN 1361-2034. Caygill, Peter. "Flying the Buccaneer: Britain's Cold War Warrior." Casemate Publishers, 2008. . Chesneau, Roger. "Aeroguide 30 - Blackburn Buccaneer S Mks 1 and 2". Suffolk, UK: Ad Hoc Publications, 2005. . English, Malcolm. "Database: Blackburn (Hawker Siddeley) Buccaneer". Aeroplane, Vol. 40, No. 4, April 2012, pp. 69–86. Gething, Michael J. "The Buccaneer Bows Out: Valediction for the Sky Pirate". Air International, Vol. 46, No 3, March 1994, pp. 137–144. Stamford, UK: Key Publishing. ISSN 0306-5634. Green, William. Aircraft Handbook. London: Macdonald & Co. (Publishers) Ltd., 1964. Green, William. The Observer's Book of Aircraft. London: Frederick Warne & Co. Ltd., 1968. Gunston, Bill. "Buccaneer - An Outstanding Strike Aeroplane". Flight International, Vol. 83, No. 2821, 4 April 1963, pp. 467–478. Hampshire, Edward. From East of Suez to the Eastern Atlantic: British Naval Policy 1964-70. Surrey, UK: Ashgate Publishing, 2013. . Harding, Richard. The Royal Navy 1930-1990: Innovation and Defense. London: Routledge, 2004. . Jackson, A.J. Blackburn Aircraft since 1909. London: Putnam, 1968. . Jefford, C.G. RAF Squadrons, a Comprehensive Record of the Movement and Equipment of all RAF Squadrons and their Antecedents since 1912. Shrewsbury, Shropshire, UK: Airlife Publishing, 2001. . Jefford, C.G (ed.). "Seminar - Maritime Operations." Royal Air Force Historical Society, 2005. ISSN 1361-4231. Laming, Tim. Fight's On!: Airborne with the Aggressors. Zenith Imprint, 1996. . Polmar, Norman. Aircraft Carriers: A History of Carrier Aviation and Its Influence on World Events, Volume I: 1909-1945. Herndon, Virginia: Potomac Books, 2006. . Steenkamp, Willem. Borderstrike!: South Africa Into Angola 1975-1980 (3rd ed.). Durban, South Africa: Just Done Productions Publishing, 2006first edition 1985. . Van Pelt, Michel. Rocketing Into the Future: The History and Technology of Rocket Planes. New York: Springer, 2012. . White, Rowland. Phoenix Squadron: HMS Ark Royal, Britain's Last Topguns and the Untold Story of Their Most Dramatic Mission. London: Bantam Press, 2009. . Winchester, Jim, ed. "Blackburn Buccaneer." Military Aircraft of the Cold War (The Aviation Factfile). London: Grange Books plc, 2006. . Wynn, Humphrey. "RAF Buccaneers". Flight International, 11 February 1971, Vol. 99 No. 3231, pp. 202–207. Wynn, Humphrey. The RAF Strategic Nuclear Deterrent Forces: Their Origins, Roles and Deployment, 1946-1969: a Documentary History. London: HMO, 1997. . External links Blackburn Buccaneer from Thunder and Lightnings The Blackburn Buccaneer at Air Vectors Blackburn Buccaneer: The awesome "Banana" Jet The FAA Buccaneer Association - explanation of BLC on Buccaneer and comparison with Phantom "NA.39 - Blackburn's Naval Bomber: A First Analytical Study" a 1958 Flight article by Bill Gunston "Flying the Buccaneer" a 1962 Flight article "1995 documentary about the Buccaneer's career" Destruction of the Cuito River bridge on 3 January 1988 by a SAAF Buccaneer Buccaneer Category:1950s British attack aircraft Category:Twinjets Category:Carrier-based aircraft Category:Air refueling Category:Mid-wing aircraft Category:T-tail aircraft Category:Aircraft first flown in 1958
</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.