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>
Eugenia Popescu-Județ Eugenia Popescu-Județ (also spelled Popescu-Judetz, 1925–2011) was a Romanian dancer, dance teacher, choreographer and folklorist. Trained in ballet, she performed as a solo dancer for several professional theatres in Bucharest and became a famed choreographer of folk-inspired character dance working for film, TV, and several professional ensembles in Romania. She taught folk dance in Romania and internationally. Later she became an expert in manuscripts relating to the 17th century Romanian prince and composer Dimitrie Cantemir. Life and work Eugenia Popescu-Județ, née Marisescu, was born in Giurgiu, Romania in 1925. Trained since childhood in classical ballet, she became a professional dancer and solo ballerina with the National Theatre Ballet of Bucharest (1945–50) and the National Opera, also in Bucharest (1950–54). After her marriage to the dancer Gheorghe Popescu-Județ her interest in Romanian folk dance increased. Together they performed folk dance-inspired choreographies and they won the first prize for character dance in the International Dance Competition at Prague. From 1954-70 she was ballet master and choreographer for the Perinița ensemble in Bucharest. In this time, she also worked as a guest choreographer for several other Romanian ensembles. From 1968 – 1970 she directed and choreographed folk dance-inspired dance films for Romanian TV. Eugenia Popescu-Județ taught dance in various capacities, for example from 1948-50 as a folk dance teacher and choreographer at the School and Ensemble of Pioneers in Bucharest, at the High School of the Arts in Bucharest, and later in the United States. Eugenia also had a career as a researcher and scholar. From 1949-51, she worked as a researcher at the Folklore Institute in Bucharest (then Institut de Folclor, today Institut de Etnografie si Folclor 'Constantin Brăiloiu'). From 1949 into the 1960s, she frequently accompanied her husband on research trips in the field to study Romanian folk dance At a time when international travels were a rare privilege for Romanians, Eugenia Popescu-Județ frequently travelled as a guest lecturer and dance instructor: to India (1969), Yugoslavia (1969), Lebanon (1969), the United States (1970), Belgium (1970–71), and Finland (1971). After her husband died in 1972, Eugenia permanently moved to the United States in 1973. In the US she taught at Duquesne University in Pittsburgh, Pennsylvania. Subsequently, she became an adjunct professor at Duquesne and continued to teach and choreograph for their dance ensemble The Tamburitzans (collection guide). In the US, she received several advanced university degrees, including a Ph.D. from the University of Pittsburgh, and published several books and articles, some of which are concerned with Dimitrie Cantemir and Turkish music. Between 1990 and 1995, Eugenia donated Gheorghe's and her own collection to the American Folklife Center at the Library of Congress, Washington, D.C. Eugenia Popescu-Județ died on December 20, 2011 in Pittsburgh, PA. Selected publications Popescu Județ, Eugenia 1973. Dimitrie Cantemir: Cartea științei muzicii (Dimitrie Cantemir: The book of the science of music). Editura Muzicală a Uniunii Compozitorilor: Bucharest. 1979. Sixty Folk Dances of Romania. Duquesne University Tamburitzans, Institute of Folk Arts: Pittsburgh, PA. 1993. Disemic features in the Romanian folk musical "Jienii". Dance studies. vol. 17, pp. 77–129. 1999. Prince Dimitrie Cantemir: theorist and composer of Turkish music. Pan: Beșiktaș, Istanbul 2007. Beyond the glory of the sultans: Cantemir's view of the Turks. Pan: Beșiktaș, Istanbul Popescu-Județ, Gheorghe, Eugenia Popescu-Județ, and James Roncevic. 1979. Judetz folk dance notation. Pittsburgh, Pa. Duquesne University Tamburitzans. References External links The Gheorghe and Eugenia Popescu-Judetz Collection at the American Folklife Center Romanian Obituary Category:1925 births Category:2011 deaths Category:People from Giurgiu Category:Dance teachers Category:Romanian choreographers Category:Romanian musicologists Category:Women musicologists Category:Ethnomusicologists Category:Romanian emigrants to the United States Category:Women anthropologists
</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.