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>
offensive in Poland. This offensive was opened by First Ukrainian Front on 12 January 1945 and was joined by other Soviet Fronts over the next few days. Moskalenko's army, based on thirteen rifle divisions, attacked the positions of the German 545th Volksgrenadier Division, part of the German Seventeenth Army, on 14 January, and achieved a rapid breakthrough. Advancing west towards Nowy Sacz and Czchow, by 19 January 38th Army was across the river Dunajec and was advancing towards the river Raba south of Cracow. Two days later it was across the Raba and by 24 January it was southwest of Cracow. Thereafter the rate of advance began to slow, though by mid-February Moskalenko's forces had reached the area west of Bielsko Biala. Further north the armies of First Ukrainian Front and First Belorussian Front had made more spectacular progress, crossing southern and central Poland, and closing up to the Oder along much of its length. Consequently, 38th Army's positions in the western Carpathians became of lesser strategic significance. On 10 March 38th Army was one of three Soviet armies to launch the Moravian-Ostrava Offensive from southern Poland across the Czech border towards Ostrava. The offensive met well-prepared and determined German resistance, and Ostrava was not taken until 30 April. The final brief offensive of 38th Army began on 6 May when it was one of more than 20 Soviet armies to launch an offensive against the German Army Group Centre in western Czechoslovakia, the key objective of which was Prague. Against collapsing opposition 38th Army advanced more than 100 kilometres west from the Ostrava area before the final surrender of Army Group Centre on 10 May. On 1 May 1945, the army, still part of 4th Ukrainian Front, consisted of the 11th Rifle Corps (30th, 221st, 276th Rifle Divisions), 52nd Rifle Corps (121st, 241st, 305th Rifle Divisions), 101st Rifle Corps (70th Guards Rifle Division, 140th, 183rd, 226th Rifle Divisions), 126th Light Mountain Rifle Corps (31st, 32nd, 72nd Guards Rifle Brigades), 24th Artillery Breakthrough Division (174th Gun Artillery Brigade, 177th Howitzer Brigade, 180th Heavy Howitzer Artillery Brigade, 126th Super-Heavy Howitzer Brigade (габр БМ), 40th Mortar Brigade, 47th Heavy Mortar Brigade, 34th Guards Rocket Artillery Brigade), 3rd Corps Artillery Brigade, 135th Gun Artillery Brigade, 901st Mountain Corps Artillery Regiment, 6th Anti-Tank Artillery Regiment, 130th, 1506th, 1642nd, 1663rd, 1672nd Anti-Tank Artillery Regiments, 197th, 253rd, 496th Mountain Mortar Regiments, 276th, 491st Mortar Regiments, 5th and 16th Guards Rocket Artillery Regiments, 76th Anti-Aircraft Artillery Division (223rd, 416th, 447th, 591st Anti-Aircraft Artillery Regiments), 1954th Anti-Aircraft Artillery Regiment. WW II Commanders Lieutenant General Dmitry Ryabyshev (July - August 1941) Major General of the Tank Forces Nikolay Feklenko (August - September 1941) Major General Viktor Tsyganov (September - December 1941) Major General Aleksey G. Maslov (December 1941 - February 1942) Major General Gavril I. Sherstyuk (February - March 1942) Artillery Major General Kirill Moskalenko (March - July 1942) Colonel-General Nikandr Chibisov (August 1942 - October 1943) Colonel-General Kirill Moskalenko (October 1943 - August 1948) Colonel-General Yakov Kreizer (April 1949 - June 1955) Postwar In January 1951 it comprised 3rd Rifle Corps (128th Guards and 318th RDs), and 35th Guards Rifle Corps (66th and 70th Guards Rifle Divisions). By November 19, 1990, it was located in Ivano-Frankivsk as part of the Carpathian Military District. The army had 413 tanks, 758 BTR and BMP armored personnel carriers, 197 artillery guns and multiple rocket launcher systems, 40 attack and 36 transport helicopters of army aviation. During the late 1980s, the army included the following units: 17th Guards Motor Rifle Division (Khmelnitsky) 128th Guards Motor Rifle Division (Mukachevo) 70th Guards Motor Rifle
</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.