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>
WMXD WMXD (92.3 MHz Mix 92.3) is a commercial FM radio station in Detroit, Michigan, owned by iHeartMedia, Inc. The station operates with 45,000 watts of power from an antenna located on the Cadillac Tower building in downtown Detroit. The studios and offices were housed for years at Detroit's Penobscot Building until November 2009, when they were moved to the Clear Channel Communications (now iHeartMedia) studios in Farmington Hills. WMXD programs an urban adult contemporary radio format. The music selection includes current R&B and classic soul along with an occasional old school hip-hop title. The station is licensed for HD Radio operations and plays contemporary Christian music on its HD2 subchannel. History WLIN/WCAR-FM years Detroit's 92.3 FM began with a Federal Communications Commission (FCC) construction permit under the call sign WIPE. The permit was originally granted in 1960, held by jazz disc jockey Sleepy Stein and Hollywood composer and musician Henry Mancini. The construction permit specified a power of 10,000 watts from a transmitter location atop the Cadillac Tower Building in downtown Detroit. In 1961, David Kelly formed Downriver Broadcasting and purchased the construction permit for WIPE from Stein and Mancini. Downriver Broadcasting signed on the station on November 2, 1962, with the call letters WLIN. Bill Hennes hosted the first broadcast from studios on Fort Street at LaBlanc Avenue in Lincoln Park. The studios were built and transmitter installed by chief engineer Art Lebermann. WLIN's original aim was to program a full-service variety format for the downriver Detroit area. The original schedule consisted of morning host Bill Hennes, a two-hour talk show, afternoon drive with Dave Kelly, and evening DJs Ron Rose and Don Haney. In 1963, the station relocated its studios to the Lafayette Pavilion Apartments complex in downtown Detroit, and the format became all jazz music. In 1964, Hy Levinson, owner of successful "good music" outlet WCAR, purchased WLIN and rechristened it WCAR-FM on December 8 of that year. WCAR-FM initially broadcast from 6 a.m. to midnight and simulcast its AM sister's conservative MOR format 100% during that time. In 1969, Levinson hired consultant Ken Draper to modernize the music format for both WCAR and WCAR-FM, and the music mix was adjusted from conservative MOR to contemporary MOR. WCAR AM made a brief attempt at Top 40 in 1971–1972; however, WCAR-FM was separately programmed, remaining a contemporary MOR outlet. Tower 92/WCXI-FM In February 1977, Levinson agreed to sell WCAR-AM-FM to Gene Autry's Golden West Broadcasters, Inc., but he would stay on as a consultant. In October of that year, Golden West changed WCAR-FM's MOR format to the syndicated "Great American Country" package from Drake-Chenault. In the summer of 1978, the stations moved into studios in the new Renaissance Center. WCAR-FM's country format was moved over to the AM station, which became WCXI. The FM station adopted the call sign WTWR, airing an Adult Top 40/Oldies hybrid format under the name "Tower 92" (an homage to the station's new digs). Tower 92 was partly live, partly automated, with the air staff including Jack Kirkwood, Joey Ryan, Kurt Kelly, Kevin Sanderson, Ron Tavernit, Russ Gibb, and Tom Shannon, with Steve Schram as program director. The news team included Linda Ashley from WDEE, Jim Lowlor from WDET-FM, John Bell and News Director Ray Cardoza. The station was only a moderate ratings success, but the most successful format on 92.3 FM to that time. In late 1981, Tower 92 transitioned from its Hot AC/Oldies hybrid to full-out Top 40 under the guidance of programmer Todd Wallace, and saw a slight improvement in the ratings in the Winter 1982 Arbitron report. Nevertheless,
</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.