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>
van Dahlen Hans Hardt-Hardtloff: block elder Werner Möhring: Heinrich Schüpp Hermann Eckhardt: Maximilian Wurach Peter-Paul Goes: Max Müller Günter Rüger: Karl Wunderlich Albert Zahn: Otto Runki Steffen Klaus: Alfred Friedrich Teitge: jailer Dieter Wien: block leader Friedhelm Eberle: block leader Otto Krieg-Helbig: Rottenführer Erik S. Klein: Untersturmführer Reineboth Herbert Köfer: Hauptsturmführer Kluttig Wolfram Handel: Hauptscharführer Zweiling Heinz Scholz: Standartenführer Schwahl Fred Ludwig: Oberscharführer 'Mandrill' Mandrak Joachim Tomaschewsky: Sturmbannführer Weisangk Gerd Ehlers: Gestapo commissar Gey Production Bruno Apitz, a member of the Communist Party of Germany, was incarcerated at Buchenwald concentration camp from 1937 to 1945. He later recalled that in the last months before liberation, he heard about a little Jewish child who had been harbored by the International Camp Committee and protected from the SS guards. In a 1974 interview, Apitz claimed he swore that "If I will survive, I will tell the story of this child." After the war, Apitz resided in the German Democratic Republic, working as a journalist and as a dramatist in the state-owned DEFA Studio. On 27 November 1954, Apitz wrote to DEFA's director-general Hans Rodenberg and suggested producing a film about the child's story. Rodenberg rejected the proposal; officially, it was due to the emphasis laid by the East German cultural establishment on depicting active resistance to Fascism rather than passive suffering. Private correspondence also revealed that studio officials regarded Apitz as insufficiently talented to handle the task. Apitz abandoned the idea to make a film and instead, turned his rudimentary screenplay into a novel. He wrote the book from 1955 to 1958. Historian Bill Niven commented that since April 1955, the 10th anniversary of the camp's liberation, "the collective memory of Buchenwald's communist prisoners was transformed into the official memory of the Socialist Unity Party of Germany", and incorporated into the country's "anti-Fascist legitimization myth". Apitz's novel Naked Among Wolves was published shortly before the dedication of the Buchenwald Memorial Site in 1958. It turned into an instant success, selling 500,000 copies within a year. By 1965, it had been translated into 25 languages and had sold 2,000,000 copies. It was also entered into the East German schools' curriculum. Apitz won the National Prize, 3rd class, in 1958. Already in April 1959, DEFA chief dramatist Klaus Wischnewski contacted Apitz with a proposition to adapt his novel for the screen, but the author was unwilling and made demands which the studio was unable to accept. Representatives of the Deutscher Fernsehfunk station approached Apitz, and he agreed to produce a television film based on his novel, which was broadcast on 10 April 1960. Although DFF did not conduct regular rating surveys yet, the adaptation was considered a success. The television critic of the newspaper Tribüne published a column praising the series, and called on DEFA to make a version of its own. During 1960, after prolonged negotiations, Apitz and DEFA settled on an arrangement. Director Wolfgang Langhoff was chosen to direct the planned picture. Being engaged in his duties as manager of the Deutsches Theater, he eventually declined the role. It was then passed on to the young Frank Beyer, who had been working on Star-Crossed Lovers. In early 1962, he and Apitz began working on the planned film. Beyer originally intended to have Ernst Busch play the role of Krämer, but the singer declined because his face was half-paralyzed from injuries during a bombing raid in World War II. Erwin Geschonneck was chosen in his stead. The director also picked his neighbor's son, the four-year-old Jürgen Strauch, to portray the child saved by the resistance. DEFA sought out foreign actors for the roles
</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.