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>
Maryland Deathfest Maryland Deathfest (often abbreviated to MDF) is an American extreme music festival held in or near Baltimore, Maryland during Memorial Day weekend each year. It is the biggest of its kind in North America. Since 2015, the organizers of MDF have produced California Deathfest (Oakland 2015-2018, Los Angeles 2019-present), Quebec Deathfest (Montreal 2018-present), Netherlands Deathfest (Tilburg 2016-2019, Eindhoven 2020), and Scandinavia Deathfest (Stockholm 2019). History and line-ups MDF was the idea of two extreme metal fans named Ryan and Evan. During the 17 years of festival history, MDF has featured over 600 bands from over 30 countries, many of which have made their US debut at the festival. The festival is promoted with the slogan: "America's biggest metal party of the year." 2003 The first installment of Maryland Deathfest was held from Friday, May 23 to Sunday, May 25 at the Thunderdome. 2004 Maryland Death Fest 2004 was held on Saturday, May 29 and Sunday, May 30. 2005 Maryland Deathfest 2005 was held on Saturday, May 28 and Saturday, May 29 at the House of Rock. 2006 Maryland Deathfest IV was held on Saturday, May 27 and Sunday, May 28. This was the first Maryland Deathfest to be held at Sonar, which hosted every iteration of the festival from 2006 to 2012. 2007 Maryland Deathfest V was held on Saturday, May 26 and Sunday, May 27. 2008 Maryland Deathfest VI was held from Friday, May 23 to Sunday, May 25. 2009 Maryland Deathfest VII was held from Friday, May 22 to Sunday, May 24, and was the first incarnation of the festival to feature a second stage outside the venue. 2010 Maryland Deathfest VIII was held from Friday, May 28 to Sunday, May 30, with a pre-fest show taking place on Thursday, May 27. 2011 Maryland Deathfest IX was held from Thursday, May 26 to Sunday, May 29, 2011. 2012 Maryland Deathfest X was held from Thursday, May 24 to Sunday, May 27, 2012. 2013 Maryland Deathfest XI was held from Thursday, May 23 to Sunday, May 26, 2013. It was the first incarnation to feature the Baltimore Soundstage, a separate venue that catered primarily to grindcore, punk and hardcore acts. It was also the last incarnation of the festival to be hosted at the former Sonar Compound, following its sale and rebranding as the Paparazzi Nightclub. 2014 Maryland Deathfest XII was held from Thursday, May 22 to Sunday, May 25, 2014. The main stages were located at the Edison Lot in Baltimore, near the former Sonar location. It is the second incarnation to feature the Baltimore Soundstage, again catering primarily to punk, grindcore and hardcore. It is the first year to feature additional bands at Rams Head Live!, which featured mainly black, death and doom metal. 2015 Maryland Deathfest XIII was held from Thursday, May 21 to Sunday, May 24, 2015. For the second time, both main stages were located at the Edison Lot in Baltimore, near the former Sonar location. It is the third incarnation to feature the Baltimore Soundstage venue, again catering primarily to punk, grindcore and hardcore, and the second to feature additional bands at Rams Head Live!, again featuring mainly black, death and doom metal. Notably, both Triptykon and Ufomammut are scheduled to appear, after having dropped off of last year's bill. Mobb Deep's performance will mark the first appearance of an act outside of heavy metal, hardcore or punk as part of the festival. 2016 Related events California Deathfest was first held at the Oakland Metro in Oakland, California in October 2015. Netherlands Deathfest was first held in Tilburg, Netherlands in February
</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.