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>
opened August 3, 1957 and was created by a group of men using a bulldozer. The track had been closed from 1974 prior to its reopening in March 2000. The track was reopened in 2000 by New Yorker Harvey Siegel and Connie Nyholm using a "country club" model. Memberships to the track are sold. Each member of the VIR Club receives track time on member days, tickets to all spectator events, and other benefits. VIR's membership model has since been followed by other racetracks across the United States. There have been at least four deaths in track history, with three fatalities coming since the reopening of the facility. The most recent death was that of 14-year-old Toriano Wilson in a US Rookie Cup motorcycle race in August 2008. The track hosted the SCCA National Sports Car Championship from its opening in 1957 until the series' demise in 1964. The IMSA GT Championship visited VIR in 1971 and 1972. After its re-opening, the AMA Superbike Championship held races at VIR from 2001 until 2010 on the North Course. The Rolex Sports Car Series utilized the Full Course from 2002 through 2011. The American Le Mans Series used the Full Course configuration for its inaugural event at VIR in September 2012 where a new track record was set by Klaus Graf driving the Muscle Milk LMP1 car. Driving a Maserati 450S, Carroll Shelby won the feature race on the track’s inaugural weekend in August 1957. The list of other well-known drivers who raced at VIR during its first incarnation includes Briggs Cunningham, Roger Penske, Mark Donohue, Richard Petty, Bob Holbert, Augie Pabst, Curtis Turner, Dick Thompson, Peter Revson, Wendell Scott, Bob Tullius, Janet Guthrie, Skip Barber, Ricky Rudd, Gene Felton, Denise McCluggage, Hurley Haywood, Brock Yates, Don Yenko, Lance Reventlow, Dan Gurney and Parnelli Jones. The track hosts many events throughout the year including the annual Gold Cup Historic Race as well as AMA races, ChampCar Endurance Series, SCCA, NASCAR test days, and local car clubs. Various driving training classes are available on the paved and unpaved (off-road) courses. The site also hosts a go kart track. Since 2014, VIR has hosted a GT only race in the IMSA WeatherTech SportsCar Championship. Testing The track is frequently used for test sessions by NASCAR teams. The teams use the road course to test their road course cars for the Watkins Glen International and Sonoma Raceway races. Since the track is not currently active on the principal NASCAR circuit (Trucks, Xfinity and Cup), a practice session is not charged against their allotment. The track is also used by various manufacturers in testing of new or updated vehicles. Video games and simulators All six configurations are featured in race simulators Automobilista and rFactor 2 (Studio 397) by Reiza Studios and iRacing. All for PC. VIR is featured in Forza Motorsport 6 as part of the Porsche Expansion Pack released on March 1, 2016. The track is featured with all six of its layouts, as well as daytime, nighttime, dry, and wet conditions. It is also featured in Forza Motorsport 7, released in October 2017. VIR's North Course is featured in the video games Supercar Challenge and Ferrari Challenge Trofeo Pirelli. All layouts of VIR were scratch built as a mod for Kunos Simulazioni's racing simulation Assetto Corsa. See also 944 Cup ChampCar Endurance Series Notes References External links VIR Website Map and circuit history at RacingCircuits.info Trackpedia guide to driving VIR with logged telemetry from drivers VIR History Category:Motorsport venues in Virginia Category:Buildings and structures in Halifax County, Virginia Category:Tourist attractions in Halifax County, Virginia
</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.