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>
(622,000). The additions were the annexation of the Carpatho-Ukraine 725,000; the Tuvan People's Republic 81,000; the remaining population on South Sakhalin 29,000 and in the Kaliningrad Oblast 5,000; and the deportation of Ukrainians from Poland to the USSR in 1944–47 518,000. The transfers out included the flight and expulsion of Poles from the USSR 1944–47 (1,529,000) and the post war emigration to the west (451,000) According to Viktor Zemskov, 3/4 of the post war emigration to the west was of persons who were from the territories annexed in 1939–40 Estimates in the west for the population transfers differ. According to Sergei Maksudov, a Russian demographer living in the west, the population of the territories annexed by the USSR was 23 million less the net population transfers out of 3 million persons who emigrated from the USSR including 2,136,000 Poles who left the USSR; 115,000 Polish soldiers of the Anders Army ; 392,000 Germans who left in the era of the Nazi-Soviet Pact and 400,000 Jews, Romanians, Germans Czech and Hungarians who emigrated after the war The Polish government-in-exile put the population of the territories of Poland annexed by the Soviet Union at 13.199 million Polish sources put the number of refugees from the territories of Poland annexed by the Soviet Union living in post war Poland at about 2.2 million, about 700,000 more than those listed in the Soviet sources of Poles repatriated. The difference is due to the fact that Poles from the eastern regions who were deported to Germany during the war or had fled Volhynia and Eastern Galicia were not included in the figures of the organized transfers in 1944–47. Figures for Belarus, Ukraine and Lithuania include about two million civilian dead that are also listed in Polish sources in the total war dead of Poland. Polish historian Krystyna Kersten estimated losses of about two million in the Polish areas annexed by the Soviet Union. The formal transfer of the territories of Poland annexed by the Soviet Union occurred with the Polish–Soviet border agreement of August 1945. According to Erlikman, in addition to the war dead, there were 1,700,000 deaths due to Soviet repression (200,000 executed; 4,500,000 sent to prisons and Gulag of whom 1,200,000 died; 2,200,000 deported of whom 300,000 died). Holocaust deaths Included in the figures of total war dead for each nation are victims of the Holocaust. Jewish deaths The Holocaust is the term generally used to describe the genocide of approximately six million European Jews during World War II. Martin Gilbert estimates 5.7 million (78%) of the 7.3 million Jews in German occupied Europe were Holocaust victims. Estimates of Holocaust deaths range between 4.9 and 5.9 million Jews. Statistical breakdown of Jewish dead: In Nazi extermination camps: according to Polish Institute of National Remembrance (IPN) researchers, 2,830,000 Jews were murdered in the Nazi death camps (500,000 Belzec; 150,000 Sobibor; 850,000 Treblinka; 150,000 Chełmno; 1,100,000 Auschwitz; 80,000 Majdanek). Raul Hilberg puts the Jewish death toll in the death camps, including Romanian Transnistria, at 3.0 million. In the USSR by the Einsatzgruppen: Raul Hilberg puts the Jewish death toll in the area of the mobile killing groups at 1.4 million. Aggravated deaths in the Ghettos of Nazi-occupied Europe: Raul Hilberg puts the Jewish death toll in the Ghettos at 700,000. Yad Vashem estimated that, in early 2019, its Central Database of Shoah Victims' Names contained the names of 4.8 million Jewish Holocaust dead.Yad Vashem: About the Central Database of Shoah Victims' Names: FAQs The figures for the pre-war Jewish population and deaths in the table below are from The Columbia Guide to the Holocaust. The
</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.