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>
Äntligen – Marie Fredrikssons bästa 1984–2000 Äntligen – Marie Fredrikssons bästa 1984–2000 () is the first greatest hits compilation album by Swedish singer-songwriter Marie Fredriksson, released on 31 March 2000 by EMI. It was compiled by Fredriksson, and contains the majority of her singles, as well as several of her favourite album tracks. It was a commercial success upon release in her native country, spending eight weeks at number 1 on the Sverigetopplistan chart, and eventually being certified triple platinum by the Swedish Recording Industry Association for shipments of almost a quarter of a million units. Background and recording The album contains every single released by Fredriksson since her 1984 debut album, Het vind, with the exception of three: Het vinds title track, "Silver i din hand" from 1985's Den sjunde vågen, and the limited edition single "Ber bara en gång" from 1996's I en tid som vår. Also excluded is her collaboration with former ABBA vocalist Anni-Frid Lyngstad, "Alla mina bästa år", which was taken from Frida's album Djupa andetag (1996) and released as a single in 1997. The record contains two previously unreleased recordings, both of which were released as singles. "Äntligen" was issued as the lead single, and became a top forty hit in Sweden. A remixed version of the song, re-titled "Solen gick ner över stan", was also included on the album. The remaining song, "Det som var nu" – a duet with singer-songwriter Patrik Isaksson – was released in Sweden as the second single, where it peaked at number 59. The latter is a Swedish re-recording of a track originally demoed in the late 90's for Roxette's 1999 album Have a Nice Day. The original English demo of the track, titled "Always the Last to Know", subsequently leaked onto the internet in 2002 when a former member of EMI staff sold a bootleg CD at a Dutch record fair. Commercial performance The record was a major commercial success in Fredriksson's native country, debuting at number one and spending a total of eight non-consecutive weeks at the top spot. It went on to spend over a year on the album chart there. It was the second best-selling album of 2000 in the country, behind 1, a greatest hits compilation by The Beatles, and was also the 87th best-selling album of 2001. The album was eventually certified triple platinum by the Swedish Recording Industry Association for shipments of almost 250,000 units. It was also a success in neighbouring Norway, peaking at number six, and was certified gold by the International Federation of the Phonographic Industry for shipments of over 25,000 units in Norway. The success of the album led Fredriksson to perform a series of 18 concerts throughout Sweden, her first solo concerts since 1992. Äntligen – Sommarturné, a two-disc box set containing a live album and a DVD of her 10 August 2000 performance at Stockholm's Maritime Museum, was released on 24 November. Track listing Credits and personnel Credits adapted from the liner notes of Äntligen – Marie Fredrikssons bästa 1984–2000. Recorded at EMI Studios in Stockholm and Studio Vinden in Djursholm, Sweden between March 1984 and February 2000. All songs produced by Lars-Göran "Lasse" Lindbom, except tracks 1, 2, 15, 16 and 17 produced by Marie Fredriksson and Mikael Bolyos; track 11 produced by Fredriksson, Anders Herrlin and Per "Pelle" Andersson; tracks 12, 13 and 14 produced by Fredriksson and Herrlin. Mastered by Åsa Winzell at Polar Mastering in Stockholm.Musicians Marie Fredriksson – lead and background vocals, piano, keyboards, synthesizer, church organ, musical arrangements, mixing Per "Pelle" Andersson – drums, keyboards, synthesizer, programming Staffan Astner
</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.