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>
VP-123 VP-123 was a Patrol Squadron of the U.S. Navy. The squadron was established as Bombing Squadron 140 (VB-140) on 21 April 1943, redesignated Patrol Bombing Squadron 140 (VPB-140) on 1 October 1944, redesignated Patrol Bombing Squadron 123 (VPB-123) on 20 November 1944, redesignated Patrol Squadron 123 (VP-123) on 15 May 1946 and disestablished on 1 October 1946. Operational history 21 April 1943: VB-140 was established at NAS Alameda, California, as a bombing squadron flying the PV-1 Ventura. During training at Alameda the squadron came under the operational control of FAW8. Ground and flight training continued through mid-June 1943, when orders were received to begin preparations for the trans-Pacific flight to NAS Kaneohe Bay, Hawaii. 25 June 1943: VB-140 arrived at NAS Kaneohe Bay, coming under the operational control of FAW-2. Advanced combat training was undertaken along with operational patrols in the vicinity of the Hawaiian Islands. 25 August 1943 – 29 February 1944: The squadron completed its advanced training syllabus and began transit to Espiritu Santo, coming under the operational control of FAW-1. Almost immediately after its last aircraft had arrived at NOB Espiritu Santo, VB-140 was reassigned to the Solomon Islands, based in two detachments at NAB Henderson Field, Guadalcanal, and Munda, Solomons. During the Rabaul and Bougainville campaigns, the squadron came under the operational control of Strike Command, Commander Air Solomons. The detachment at Munda rejoined the squadron at Henderson Field on 29 February 1944. 8 April 1944: VB-140 was relieved for return to NAS Alameda. Upon arrival the squadron was given home leave. 22 May – 20 November 1944: VB-140 was reformed at NAS Alameda. Although the squadron had been scheduled to receive the new PV-2 Harpoon, backlogs in production resulted in a change of assignment to the more readily available PB4Y-1 Liberator. As a result of this last minute change, the squadron was transferred to NAS Hutchinson, Kansas, on 18 October 1944, for conversion training in the PB4Y-1. This training was completed in mid-November, and the squadron, now designated VPB-140, returned to NAS Alameda for ground training. Upon its arrival on 20 November 1944, the squadron was redesignated VPB-123. 18 December 1944: VPB-123 was transferred to NAAS Crows Landing, California, for additional operational flight training. The next day the squadron received its first PB4Y-2 Privateers. 6 February – April 1945: While the squadron was preparing for its trans-Pacific flight to NAS Kaneohe Bay, Chief of Naval Operations directed on 6 February that VPB squadrons 109, 123 and 124 of FAW-2 be equipped to employ the Bat (guided bomb) in combat. Final preparations for the trans-Pacific flight to NAS Kaneohe Bay began at the end of February. On 17 March 1945, one ground officer and 65 enlisted personnel departed NAS Alameda on board for NAS Kaneohe Bay. Twelve crews and aircraft departed NAAF Crows Landing, arriving at NAS Kaneohe Bay on 20 March 1945. Upon its arrival the squadron began training in use of the new weapon. With the addition of this gear, one officer and 21 enlisted personnel were added to the squadron to maintain the equipment. Training in deployment of the Bat and advanced combat continued at NAS Kaneohe Bay through the end of April 1945. 6 April 1945: Lieutenant (jg) Terence P. Cassidy and his crew were ferrying a PB4Y-1 from California to NAS Kaneohe Bay when all four engines cut out during the approach to the field and the aircraft crashed in the ocean. Two crewmen were killed in the crash, but the remaining personnel safely exited the aircraft before it sank and were picked up by rescue vessels. 22–31 May 1945:
</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.