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>
SriLankan Airlines SriLankan Airlines (marketed as SriLankan) is the flag carrier of Sri Lanka and a member of the Oneworld airline alliance. It is currently the largest airline in Sri Lanka by number of aircraft and destinations and was launched in 1979 as Air Lanka following the termination of operations of the original Sri Lankan flag carrier Air Ceylon. Following its partial acquisition in 1998 by Emirates, it was re-branded and introduced the current livery. In 2008 the government of Sri Lanka acquired all the shares of the airline from Emirates. After ending the Emirates partnership, it has continued using its re-branded name and logo. The airline did not change the branding after government acquired majority stakes from Emirates in 2008. Sri Lankan Airlines operates over 560 flights per week. The Airline operates to 113 destinations in 51 countries (including codeshare operations) from its main hub located at Bandaranaike International Airport near Colombo. SriLankan Airlines joined the oneworld airline alliance on 1 May 2014. History Air Lanka Air Lanka was established as the flag carrier of Sri Lanka once the Sri Lankan government shut down the bankrupt Air Ceylon. Air Lanka's initial fleet consisted of two Boeing 707, leased from Singapore Airlines. One Boeing 737 was leased from Maersk Air and maintained by Air Tara. On 24 April 1980, the lease ended; Air Lanka received a replacement Boeing 737 leased from Royal Brunei. On 1 November 1980, Air Lanka commenced wide-body operations with a leased Lockheed L1011-1 Tristar from Air Canada. On 15 April 1982, Air Lanka received its own L1011 Tristar purchased from All Nippon Airways. With the introduction of Tristar aircraft, the Boeing 707s were phased out and sold. Then another L1011 was leased from Air Canada whilst the third L1011 was purchased from All Nippon. On 1 May 1982, HAECO took over the maintenance of the two Air Lanka-owned Tristars, while Air Canada maintained two leased Tristars. On 28 March 1980, Air Lanka signed a purchase agreement for two brand new Lockheed L1011-500 Tristars, the most advanced wide-body aircraft in the world at that time. The first Lockheed L1011-500 (4R-ULA) was accepted on 26 August 1982, at Palmdale, California. It was flown to Amsterdam as UL flight 566P. On 28 August, 4R-ULA "City Of Colombo" left for its inaugural flight from Amsterdam to Colombo as UL566. It reached Colombo on 29 August. This was followed by second Lockheed L1011-500, 4R-ULB, "City Of Jayawardanapura". On 8 June 1984 the airline received its first Boeing 747-200B "King Vijaya" and the second joined later. The aircraft were used on flights to Europe and a few flights to southeast Asia. Rebranding Air Lanka, which was state-owned, was partially privatized in 1998, with investment by Dubai-based Emirates Group, when Emirates and the Sri Lankan government signed an agreement for a ten-year strategic partnership. This agreement included exclusive rights for all aircraft ground handling and airline catering at Colombo-Bandaranaike airport for ten years. Emirates bought a 40% stake worth US$70 million (which it later increased to 43.6%) in Air Lanka and sought to refurbish the airline's image and fleet. The government retained a majority stake in the airline but gave full control to Emirates for investment and management decisions. In 1998, the Air Lanka re-branded to SriLankan Airlines. SriLankan acquired 6 Airbus A330-200s to complement its fleet of Airbus A340-300 and A320-200 aircraft. The A330-200 aircraft joined the airline between October 1999 and July 2000. The company's fourth A340-300 arrived at Colombo painted in the airline's new corporate livery. SriLankan upgraded its existing A340 fleet into a two-class configuration (business and economy class)
</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.