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>
Yun Young-su Yun Young-su () is a South Korean writer. Life Yun Young-su was born in 1952 in Dongsung-dong, Jongno-gu, Seoul. She graduated from Gyeonggi Girls’ Middle School and Gyeonggi Girls’ High School. In 1975, she graduated from Seoul National University in historical education. Afterwards, she became a teacher at Yeouido Middle School. In 1979, she transferred to Daebang Girls’ Middle School before stopping teaching in 1980. She began writing in 1987, when she took a fiction writing class at the Culture and Arts Foundation. In 1990, when she was thirty eight, her short story “Saengtaegwanchal” (생태관찰 Ecology observation) was published in Modern Fiction and won the Modern Literature New Writer’s Prize. Later, she pursued an active career, publishing various collections such as Jaringobiui jukeumeul aedoham (자린고비의 죽음을 애도함 Mourning the death of a miser), Nae yeojachingu-ui gwi-yeoun yeonae (내 여자친구의 귀여운 연애 The cute dating life of my girlfriend), and Gwigado (귀가도 Come back home). In 1997, her story “Chakhan saram Mun Seonghyeon” (착한 사람 문성현 Kind Mun Seonghyeon) won the 30th Hankook Ilbo Literary Award. In 2008, her collection Nae anui hwangmuji (내 안의 황무지 The desert inside me) won the 3rd Namchon Literature Prize, and in the same year she won the 23rd Manhae Literature Prize with her collection Soseol sseuneun bam (소설 쓰는 밤 A night of writing fiction). Writing Yun has mostly dealt with stories of those cast out from Korean society such as the sick, the crippled, gangsters, the disabled, and women, as well as with relationships of families that are on the brink of breakdown. Mun Seonghyeon, the protagonist of "Chakhan saram Mun Seonghyeon" (착한 사람 문성현 Kind Mun Seonghyeon) is born with a disability. Literary critic Shin Seungyeop has said that “through the invisible paradox of the novel that such human dignity is realized through the special condition of a mentally disabled protagonist, this work is even more of a shock to us the reader,” and he pointed out that this “shines even brighter when in contrast with so many other characters who are crumpling without any dignity due to the destructive for of capitalism.” Works Sumeun Goljjagiui Danoungnamu Hangeuru (숨은 골짜기의 단풍나무 한 그루), Yeollimwon, 2018. Gwigado (귀가도 Come back home), Munhakdongne, 2011. Saranghara, huimangeopsi (사랑하라 희망없이 Love, Hopelessly), Minumsa, 2008. Yun Yeong-su Fiction Set – 2 Volumes - Nae yeojachingu-ui gwi-yeoun yeonae (내 여자친구의 귀여운 연애 The cute dating life of my girlfriend) + Nae anui hwangmuji (내 안의 황무지 The desert inside me), Minumsa, 2007. Soseol sseuneun bam (소설 쓰는 밤 A Night of Writing Fiction), Random House Korea, 2006. Jukum, aju natjeun hwansang (죽음, 아주 낮은 환상 Death, a Very Low Fantasy), Yunkeom, 1998. Jaringobiui jukeumeul aedoham (자린고비의 죽음을 애도함 Mourning the Death of a Miser), Changbi, 1998. Chakhan saram Mun Seonghyeon (착한 사람 문성현 Kind Mun Seonghyeon), Changbi, 1997. Works in translation Love, Hopelessly, Asia Publishers, 2017 (English) "Secret Lover" in Azalea: Journal of Korean Literature & Culture Volume 3, 2010 (English) Awards 2011 The Violet Cultural Literary Prize 2008 23rd Manhae Literature Prize 2008 3rd Namchon Literature Prize 1997 30th Hankook Ilbo Literary Award 1990 Modern Literature New Writer’s Prize Further reading Book review: Come back home (English) 장선미, 󰡔윤영수 소설 연구 : 주제와 연작기법의 상관관계를 중심으로󰡕, 중앙대학교 대학원, 2013. { Jang, Seon-mi, "A Study on Yun Young-su’s Fiction: With Focus on the Correlation of Subjects and the Series Method", Chung-Ang University Graduate School, 2013. } 신미경, ｢1980~90년대 여성 작가 소설의 여성성 연구, 광주여자대학교, 2007. Shin, Mi-kyeong, 백지은, ｢엄마의 풍경｣, 󰡔창작과비평󰡕, 2011년 가을호. { Baek, Ji-eun, "The Sight of a Mother", Creation and Criticism, Fall Issue,
</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.