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>
Joint Venture and 31.9% of the Musselwhite mine. In 2010, Kinross purchased 91% of Red Back Mining for $7.1-billion. The purchase brought with it the two gold mines in Africa (Chirano and Tasiast). Also this year, Kinross acquired the Dvoinoye deposit and the property in Vodorazdelnaya, about north of Kinross’ Kupol operation; and sold 25% of its interest in the Cerro Casale project in Chile to Barrick. The following year, Kinross entered into a share purchase agreement with the State Unitary Enterprise of the Chukotka Autonomous Okrug, whereby it therefore held 100% of the Kupol mine and exploration licenses. Kinross sold its interest in the Crixás mine to AngloGold Ashanti in 2012. In 2013 the company's silver production was 9 million ounces, making the company the 18th largest silver producer in the world at the time. Kinross' proven and probable gold reserves were 33.2 million ounces as at December 31, 2015. This total includes reserves from inactive mines, Cerro Casale (5.8 million ounces) and Maricunga (1.0 million ounces). In 2015, Kinross produced 2.59 million ounces of gold. Kinross was listed as fifth largest gold producer worldwide in 2015. As of December 31, 2015, Kinross reported its White Gold project was a pre-development property. In December 2017, Kinross acquired mineral rights to Gilmore, or Parcel G, a 709-acre tract adjacent to its Fort Knox Gold Mine, about 25 miles northeast of Fairbanks, Alaska. Estimates valuate the land as containing 2.1 million ounces of gold. On March 15, 2018, Kinross announced its adoption of a new shareholder rights plan, effective March 29, 2018, replacing the current shareholder rights plan, which expires March 29, 2018. Operations As of 2018, Kinross Gold operates mines in North and South America, Russia, and West Africa. 60% of Kinross gold production comes from the United States and Brazil, while Russia and West Africa (Mauritania and Ghana) each account for 20% of the company's production. Fort Knox Its Fort Knox gold mine property counts with a mill, tailings storage, heap leach facility, the Gil project, and the True North open pit mine, which is closed and under monitoring. In 2015 the mine produced about 401,500 gold equivalent ounces of gold. Expected to run out of ore in 2021, the mine's life has been extended to 2027 following Kinross' $100 million expansion investment announced in 2018, increasing life-of-mine production by about 1.5 million gold equivalent ounces. Round Mountain The Round Mountain Gold Mine is located in Nye County, Nevada and has operated since 2003. Round Mountain was a joint venture between Round Mountain Gold Corporation (a Kinross subsidiary) and Barrick Gold. Kinross' merger with Echo Bay Mines gave them a 50% share of Round Mountain, with Barrick retaining the remainder. In 2016 Kinross purchased Barrick's 50% interest. Round Mountain is located in an area where mining has taken place since 1906, having produced 350,000 ounces of gold over a sixty-year period. Its production volume was approximately 197,000 gold equivalent ounces for 2015. the mine was undergoing expansion to increase the size of the pit and related infrastructure. In September 2017, Kinross announced the Phase W expansion project for Round Mountain. Phase W is expected to extend mining at the site by five years and to increase its life-of-mine production by 1.5 million Au oz. and is predicted to generate incremental cash flow of $265 million, with a sustained annual production of about 341,000 au oz. through 2024. This top performing mine benefits from one of the top mining locales in the world. Class Action Lawsuits In 2012, securities class action lawsuits launched in the U.S. and Canada alleged that
</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.