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>
Orthodox churches in Vilna. However, as most of the inhabitants of the Vilna Governorate were Catholics or Jews, a separate Catholic church and a small synagogue were also built into one of the prison blocks. The new prison had its own water supply and had its own sewage system. The complex was surrounded with a stone wall. The prison complex was the most expensive building constructed in the region in the early 20th century. The cells were fully equipped, heated and ventilated, and constructed entirely of non-combustible materials (except for window frames and doors). The prison block containing the churches alone cost 504,000 roubles. The building of the detention centre cost 285 thousand roubles, while the administrative building with offices and apartments for the staff cost approximately 180 thousand roubles. Despite its complexity, the project was finished in 1905, a full year ahead of schedule. Usage In the interwar Second Polish Republic, the prison was used by Polish authorities to hold numerous notable West Belarusian political prisoners, for example: writers Maksim Tank, Maksim Haretski, Michaś Mašara, Uladzislau Pauliukouski, teacher Barys Kit, musician and composer Ryhor Šyrma, ballet dancer Janka Chvorast. In June 1941, during the German invasion, the NKVD shot prisoners at Lukiškės Prison (see NKVD prisoner massacres). The prison became more notorious during the Nazi occupation of Lithuania, when it was used by the Gestapo and Lithuanian Saugumas as a holding cell for thousands of Jews from the Vilna Ghetto and Poles, picked up in łapankas (roundups) in reprisals for actions by the Polish resistance. The majority were taken to the outskirts of Vilnius and executed at Ponary (Paneriai). When Soviets reoccupied the territory in 1944, the prison was returned to the NKVD who detained thousands of Polish activists and partisans of Armia Krajowa. Notable prisoners Francišak Alachnovič, Belarusian dramatist Menachem Begin, future Prime Minister of Israel Mykolas Biržiška, Lithuanian politician Mykolas Burokevičius, Lithuanian communist political leader Bertrand Cantat, French singer Janka Chvorast, Belarusian ballet dancer Felix Dzerzhinsky, Russian statesman, revolutionary and founder of Cheka Mieczysław Gutkowski, Polish lawyer and economist Maksim Haretski, Belarusian writer Romuald Jałbrzykowski, Polish Catholic priest and a bishop Barys Kit, Belarusian teacher, mathematician and scientist Michaś Mašara, Belarusian writer Uladzislau Pauliukouski, Belarusian writer Maksim Tank, Belarusian writer Kazimierz Pelczar, Polish physicist and scientist, pioneer of oncology Kazimierz Pietkiewicz, Polish socialist and independence activist Barbara Skarga, Polish philosopher Ryhor Šyrma, Belarusian musician and composer Leopold Tyrmand, Polish writer Jonas Vileišis, Lithuanian publisher and diplomat Jacob Wygodzki, Polish-Lithuanian Jewish politician Tomasz Zan, Polish poet Marcelė Kubiliūtė, the only Lithuanian woman awarded all major Lithuanian orders References Notes Bibliography Janusz Hrybacz, Karta dziejów wileńskiej i nowogródzkiej Armii Krajowej. Last accessed on 16 August 2009 Eugeniusz Kościesza, Ojczyźnie skradziona tożsamość, Chapter 19. Last accessed on 16 August 2009 ks. Tadeusz Krahel,Tragiczny marzec 1942 roku, W służbie miłosierdzia, MARZEC 2007, nr 3/2007 Czesław Michalski, Ponary - Golgota Wileńszczyzny (Ponary — the Golgoth of Wilno Region). Konspekt nº 5, Winter 2000–2001, a publication of the Academy of Pedagogy in Kraków. Last accessed on 10 February 2007. External links Official website The Belarusian song (beg. of 20th century) about Lukiškės Prison Category:1904 establishments in Lithuania Category:Government buildings completed in 1904 Category:Buildings and structures in Vilnius Category:Prisons in Lithuania Category:Prisons in the Soviet Union Category:Holocaust locations in Lithuania Category:Mass murder in 1941 Category:Soviet World War II crimes Category:Massacres committed by the Soviet Union
</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.