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>
head had healed with scars. This gave him the nickname "Monk with the Wounded Head" (爛頭和尙). Using that description, Chan Heung eventually located the monk and handed him a letter of recommendation from Li Yau-San. However, Chan Heung was disappointed when Choy Fook turned him down. After much begging, Choy Fook agreed to take the young man as a student, but only to study Buddhism. One morning, when Chan Heung was practicing his martial arts, Choy Fook pointed to a heavy rock and told him to kick it into the air. Chan Heung exerted all of his strength as his foot crashed against the rock, sending it away. Instead of being complimented, he watched as Choy Fook placed his own foot under the heavy rock and effortlessly propelled it through the air. Chan Heung was awestruck by this demonstration. Again he begged Choy Fook to teach him his martial arts. This time the monk agreed, and for nine years, Choy Fook taught Chan Heung both the way of Buddhism and the way of martial arts. When he was twenty-eight, Chan Heung left Choy Fook and returned to King Mui village in 1834, where he revised and refined all that he had learned. In 1836, Choy Fook gave Chan Heung advice in the form of a special poem known as a double couplet, as follows: 龍虎風雲會, The dragon and tiger met as the wind and the cloud. 徒兒好自爲, My disciple, you must take good care of your future. 重光少林術, To revive the arts of Shaolin, 世代毋相遺. Don't let the future generations forget about this teaching. In 1836, Chan Heung formally established the Choy Li Fut system, named to honor his 3 teachers: that Buddhist monk, Choy Fook, who taught him Choy Gar, and Li Yau-San who taught him Li Gar, plus his uncle Chan Yuen-Woo 陳遠護, who taught him Fut Gar, and developed to honor the Buddha and the Shaolin Kung Fu roots of the system. Characteristics Chan Heung 陳享 revised and refined all that he had learned from his teachers and with his disciples, established standardized hand and leg techniques. Choy Li Fut's hand techniques contain 10 elements 十訣: Kum 擒 slapping or pressing palm deflection, Na 拿 shooting arm bridge, Gwa 掛 back fist, So 掃 sweeping, Tsop 插 yin/yang knuckle strike, Pow 拋 upward power shot, Jong 撞 small upward power shot, Chaw 爪 claw, Bin 鞭 swinging power shot, Pei 劈 chopping, and Lui Yin 擂陰 yin/yang fist. Choy Li Fut's leg techniques contain 6 elements: Chan 撐 bracing, Ding 釘 nailing, Liu Tat 撩踢 kicking, So 掃 sweeping, Jet 截 blocking, Au 勾 hooking, and Dan 彈 springing. There are 8 techniques of how the hand and leg techniques are applied. They are: Yin 陰 negative, Yang 陽 positive, Kong 剛 hard, Yau 柔 soft, Hui 虛 false, Shi 實 real, Tou 偷 stealing, and Lau 溜 sneaking. The stances of Choy Li Fut are similar in height to other martial arts styles, such as Hung Gar, but not as high as those of Wing Chun. This allows the practitioner to move quickly during combat without sacrificing stability and power generation. What is unique to the Choy Li Fut style is sometimes termed "whipping", where the practitioner's upper torso twists to generate more power in executing hand and arm techniques. In other martial art styles, the upper body is less dynamic, placing more emphasis in stability and generation of static power. Other differences include how the practitioner's stance should be while facing their opponent. In the Hung Gar and Wing Chun styles, practitioners hold their torso
</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.