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>
Vivienne Segal Vivienne Sonia Segal (April 19, 1897 – December 29, 1992) was an American actress and singer. Early years Segal was born on April 19, 1897, in Philadelphia, Pennsylvania. She was the elder daughter of Jewish parents, Bernard Segal (a physician) and Paula (née Hahn) Segal, who encouraged Vivienne and her sister, Louise, to seek careers in show business. Her obituary in The Guardian reported that her father "underwrote a local opera company in order to give her the chance to sing." Career Segal's career began when she was 15 years old and began performing with the Philadelphia Operatic Society. Her Broadway debut came in The Blue Paradise (1915), a production that was underwritten by her father. In 1924 and 1925, she was a member of the Ziegfeld Follies. She was also a performer on the CBS Radio program Accordiana in 1934. Segal may be best remembered for creating the role of Vera Simpson in Richard Rodgers and Lorenz Hart's Pal Joey and introducing the song "Bewitched, Bothered and Bewildered". Pal Joey opened at the Ethel Barrymore Theatre December 25, 1940, with a cast that included Gene Kelly and June Havoc. She also starred as Morgan LeFay in the Rodgers and Hart revival of A Connecticut Yankee in 1942. One of Lorenz Hart's last songs, "To Keep My Love Alive", was written specifically for her in this show. Since the 1940 Pal Joey production went unrecorded, a studio cast was assembled in 1950 to record the musical. In 2003, this recording was reissued on CD by Columbia Broadway Masterworks in a release featuring the full show's numbers plus two bonus tracks: Harold Lang singing "I Could Write a Book" (from the CBS TV show Shower of Stars) and Segal singing "Bewitched, Bothered and Bewildered" on the CBS Radio show Stage Struck, interviewed by Mike Wallace recalling Hart's promise to write her a show. In 1952, she played in Pal Joey again, when it was revived on Broadway. Vivienne Segal retired from acting in 1966 following a guest appearance on Perry Mason as Pauline Thorsen in "The Case of the Tsarina's Tiara." Awards In 1952, Segal received a Donaldson Award in the Best Performance-Actress (Musical Division) category for her performance in the revival of Pal Joey. Personal life and death Segal and actor Robert Ames eloped in 1923 but divorced three years later. In 1950, she married television executive Hubbell Robinson, Jr. Both unions were childless. Segal died in Beverly Hills, California of heart failure on December 29, 1992, aged 95. She was interred in the Westwood Village Memorial Park Cemetery in Los Angeles. Musical theater 1915 The Blue Paradise 1917 My Lady's Glove 1917 Miss 1917 1918 Oh, Lady! Lady!! 1919 The Little Whopper 1921 A Dangerous Maid (as a replacement) 1922 The Yankee Princess 1923 Adrienne 1924 Ziegfeld Follies 1925 Ziegfeld Follies 1925 Florida Girl 1926 Castles in the Air 1926 The Desert Song 1928 The Three Musketeers 1931 The Chocolate Soldier 1938 I Married an Angel 1940 Pal Joey 1943 A Connecticut Yankee Broadway revival 1947 Music in My Heart 1950 Great to Be Alive! 1952 Pal Joey Broadway revival Films References Sources Sies, Luther F. Encyclopedia of American Radio: 1920-1960. Jefferson, North Carolina: McFarland, 2000. External links Vivienne Segal photographs, 1870s-1972 (bulk 1915-1938), held by the Billy Rose Theatre Division, New York Public Library for the Performing Arts Category:1897 births Category:1992 deaths Category:20th-century American actresses Category:20th-century American singers Category:20th-century American women singers Category:Actresses from Philadelphia Category:American film actresses Category:American musical theatre actresses Category:American radio actresses Category:American television actresses Category:Burials at Westwood Village Memorial Park Cemetery Category:Disease-related
</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.