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>
Tuusula Tuusula (; ) is a municipality of Finland. It belongs to the Helsinki sub-region of the Uusimaa region. The municipality has a population of (). Geography Tuusula, lying on the shores of Tuusulanjärvi lake, is located in the province of Southern Finland and is part of the Uusimaa region. It covers an area of of which is water. The population density is . Tuusula has three population centres. The administrative centre is Hyrylä (about 19,500 residents), other two are Jokela (5,300 residents) and Kellokoski (4,300 residents). The remaining 4,400 residents are distributed to the rural areas outside of municipal centres. The most significant main road connection between Hyrylä and Helsinki is the Tuusulanväylä motorway. The neighbouring communes are Vantaa to the south, Nurmijärvi to the west, Hyvinkää to the north, Mäntsälä and Järvenpää to the north east, and Sipoo and Kerava to the east. Villages Huikko, Hyrylä, Jokela, Jäniksenlinna, Kellokoski, Lahela, Myllykylä, Nahkela, Paijala, Riihikallio, Ruotsinkylä, Ruskela, Rusutjärvi, Savikulma, Siippoo, Vanhakylä History The area in what is now Tuusula was located in the larger municipality of Sipoo. In 1643, it became a separate parish in the municipality, and in 1653, it became a separate municipality. Tuusula's boundaries have not always remained the same: in 1924 the municipality of Kerava split from here; in 1950 the municipality of Korso was split between Tuusula, Kerava, and Sipoo; and in 1951 the municipality of Järvenpää split from here. During the Crimean War (1853–1856), a Russian garrison was stationed in what is now Hyrylä. The modern parish mostly developed around it. The area had always been a fairly fertile area, thus encouraging farming. The development of other industries began in 1795, when an ironworks was created in Kellokoski that functioned until the 1980s. The establishment of a railway in Jokela furthered the growth. Soon after this industrial time another aspect of Tuusulan history was realised. The Tuusulanjärvi lake attracted many artists who wanted to paint the beautiful landscape. Following the footsteps of Aleksis Kivi, the Finnish national poet who spent the last years of his life in a hut on the shores of the lake, Jean Sibelius, Juhani Aho, and Pekka Halonen even established their main residences here. Recently these houses have become tourist sites, especially Sibelius' house Ainola. Also, Tuusula Lake Road on the eastern shore of the lake is an outside museum. The Jokela rail crash was a rail crash which occurred on 21 April 1996 here. Jokela High School was the site of the Jokela school shooting, a school shooting which occurred on 7 November 2007, leaving 9 dead (including the 18-year-old perpetrator, Pekka-Eric Auvinen). Notable people Teemu Suninen, rally driver Demographics Tuusula, in the Helsinki suburbs, has been in a positive balance of population, with it more than doubling in size since 1970. The municipality is officially Finnish. Swedish was the second official language until 1943. Today only 2% are Swedish-speaking. Population in: 1970 – 17.235 1980 – 22.151 1987 – 26.234 1990 – 27.328 1997 – 29.957 2000 – 31.957 2007 – 34.890 Politics Parliamentary elections Results of the 2019 Finnish parliamentary election in Tuusula: Finns Party 21% National Coalition Party 20.4% Social Democratic Party 16.5% Centre Party 12.3% Green League 11.3% Movement Now 5.3% Left Alliance 4.8% Blue Reform 2.6% Christian Democrats 2% Other parties 4% Municipal Council Twin towns – Sister cities Tuusula is twinned with: Economy and Infrastructure Economy Due its proximity to the Helsinki, Tuusula is, for the most part, a commuter town. Tuusula itself has around 10,000 jobs. 66% of the jobs are in the service sector, 31% in the workforce, and 1.5%
</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.