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>
Naked Among Wolves (1963 film) Naked Among Wolves () is a 1963 East German film directed by Frank Beyer and starring Erwin Geschonneck and Armin Mueller-Stahl. The film is based on author Bruno Apitz's 1958 novel by the same name. The film was remade in 2015 under the direction of Philipp Kadelbach. Plot Buchenwald concentration camp, early 1945. A Polish prisoner named Jankowski, who has been on a death march from Auschwitz, brings a suitcase to the camp. When the inmates in the storage building open it, they discover a three-year-old child. Jankowski tells them he is the son of a couple from the Warsaw Ghetto, both of whom perished. Prisoner Kropinski becomes attached to the boy, and begs Kapo André Höfel to save him. Höfel, who is a member of the camp's secret communist underground, consults with senior member Bochow. He is instructed to send the child on the next transport to Sachsenhausen. Höfel cannot bring himself to do so, and hides him. Jankowski is deported to Sachsenhausen alone. SS man Zweiling stumbles upon Höfel and his friend, fellow communist Pippig, as they play with the child. Knowing well that the American Army is approaching, Zweiling is convinced to turn a blind eye, hoping to present himself as a humane guard to the Americans. His wife tells him to get rid of the boy to avoid punishment by his superiors. Zweiling writes a denunciation letter to the Gestapo, making it appear as if it was composed by a prisoner. Kluttig and Reineboth, two other SS officers, realize that Zweiling was the informant, but choose to ignore it; they begin to search for the child. Kluttig is keen on massacring the camp's surviving prisoners, but commandant Schwahl forbids it, fearing American retribution - although he knows of the secret resistance. Kluttig and Reineboth brutally torture Höfel and Kropinski, but they refuse to tell the boy's whereabouts. The resistance's leaders meet to discuss the crisis, that may bring about an SS crackdown before their planned uprising. They determine to save the child, who is hidden in a barrack. Reineboth takes all the personnel of the storage chamber to an investigation by the Gestapo. Pippig is subject to horrible torture. After seeing his injuries, prisoner August Rose has a nervous breakdown and confesses all. Pippig dies of his wounds. Kluttig raids the barrack, but cannot find the child. The SS plan to evacuate the camp. They order camp elder Krämer, who is also the communists' covert leader, to organize the prisoners for transport. Krämer manages to stall the preparations by pretending to cooperate. Resistance leader Bogorski, a Soviet prisoner-of-war, reveals that he hid the child on his own, where Kluttig would not find him. As the deadline for evacuation nears, the boy is taken out from his hiding. Kluttig enters the room where the inmates are gathered, intending to shoot the child, but the prisoners form a wall around him and force Kluttig to leave. Krämer orders an armed uprising. The prisoners, led by Bogorski, drive out the remaining SS. Most of them survive and flee wearing civilian clothing. Höfel and Kropinski are freed from their cells. Krämer takes the boy out as the camp is liberated. Cast Jürgen Strauch: child Erwin Geschonneck: Walter Krämer Armin Mueller-Stahl: André Höfel Fred Delmare: Rudi Pippig Gerry Wolff: Herbert Bochow Peter Sturm: August Rose Viktor Avdyushko: Leonid Bogorski Zygmunt Malanowicz: Josef Pribula Werner Dissel: Otto Lange Bruno Apitz: old man Angela Brunner: Hortense Zweiling Krystyn Wójcik: Marian Kropinski Hans-Hartmut Krüger: Henri Riomand Boleslaw Plotnicki: Zacharias Jankowski Jan Pohan: Kodiczek Leonid Svetlov: Zidkowski Christoph Engel: Peter
</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.