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>
maneuvering for a second landing attempt, killing all 42 people on board. February February 1 – U.S. Air Force Major R. Smith sets a new world absolute time-to-height speed record, flying a McDonnell Douglas F-15A Eagle to 30,000 meters (98,425 feet) in 207.80 seconds. February 3 – An engine fire breaks out aboard a Philippine Air Lines Hawker Siddeley HS 748 (registration RP-C1028) two minutes after takeoff from Manila International Airport in Manila, the Philippines. While attempting to return to the airport it crashes in a rice field, killing all 33 people on board. February 8 – Hastily developed Larnaca International Airport opens just outside Larnaca, Cyprus, as Cyprus's only commercial airport; it replaces Nicosia International Airport, permanently closed and abandoned during the Turkish invasion of Cyprus in July 1974. Cyprus Airways, which had suspended flight operations in July 1974 when Nicosia International closed and all five of its aircraft were stranded there, resumes flight operations the same day. Cyprus Airways and Olympic Airways are the first airlines to serve the new airport; its runways are not yet long enough to accommodate jet aircraft, so Cyprus Airways uses Vickers Viscount 800 airliners there, while Olympic uses NAMC YS-11s. February 9 – A German Air Force Transall C-160D carrying 37 West German soldiers from Hohn Air Base in West Germany to a North Atlantic Treaty Organization (NATO) missile base on Crete crashes in stormy weather at an altitude of about 5,000 feet (1,524 meters) in snow-covered mountains 24 kilometers (15 miles) from Crete's Chania-Soúda Airport, killing all 42 people on board. February 14 – Jerry Pettis, a member of the United States House of Representatives representing California's 37th Congressional District dies when the Beechcraft Model V35B Bonanza he is piloting crashes near Cherry Valley, California, after he encounters adverse weather conditions. February 20 – A Cessna 182 Skylane piloted by American professional wrestler Buddy Colt and also carrying wrestlers Gary Hart, Austin Idol, and Bobby Shane, stalls while attempting a go-around in clouds and darkness at Peter O. Knight Airport in Tampa, Florida, and crashes into Tampa Bay. Colt, Idol, and Hart survive, but Shane drowns in the plane's back seat. February 22 – A lone hijacker commandeers a VASP Boeing 737-2A1 (registration PP-SMU) during a domestic flight in Brazil from Goiânia to Brasília, demanding ransom money. The hijacker is taken down. February 27 – A VASP Embraer EMB 110C Bandeirante crashes just after takeoff from São Paulo–Congonhas Airport in São Paulo, Brazil, killing all 15 people on board. March March 1 – Three hijackers commandeer an Iraqi Airways Boeing 737-200 during a domestic flight in Iraq from Mosul to Baghdad. They surrender to authorities, but one person is killed during the incident. March 2 – A hijacker aboard Air New England Flight 911 – a de Havilland Canada DHC-6 Twin Otter bound from Hyannis to Nantucket, Massachusetts – demands to be flown to New Haven, Connecticut. Police storm the plane at Hyannis Airport and arrest the hijacker. March 12 – An Air Vietnam Douglas C-54D-5-DC Skymaster (registration XV-NUJ) flying from Vientiane, Laos, to Saigon, South Vietnam, crashes 25 kilometers (15.6 miles) southwest of Pleiku, South Vietnam, killing all 26 people on board. March 16 – A LADE Fokker F27 Friendship 400M (registration TC-72) crashes into the mountain Cerro López 35 kilometers (21.9 miles) west of San Carlos de Bariloche International Airport in San Carlos de Bariloche, Argentina, while descending for an instrument approach to the airport, killing all 52 people on board. Most of the 47 passengers are soldiers and police officers who took part in flood relief operations 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.