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>
Klaus Schmiegel Klaus Schmiegel (born June 28, 1939) is most famous for his work in organic chemistry, which led to the invention of Prozac, a widely used antidepressant. Born in Chemitz, Germany, he moved to the U.S. in 1951 to continue his education. After he finished his schooling, Schmiegel joined Eli Lilly as a senior organic chemist; he worked there from 1968 until his retirement in 1993. There, he collaborated with Bryan Molloy to create a new group of compounds. One of them, fluoxetine hydrochloride, became the selective serotonin reuptake inhibitor (SSRI) used in the antidepressant medication, Prozac. The drug, approved by the U.S. Food and Drug Administration (FDA) in 1988, has revolutionized treatment for depression. In 1999, Schmiegel and Molloy were inducted into the National Inventors Hall of Fame and given the American Innovator Award. Throughout his career, Schmiegel garnered eighteen patents related to the synthesis of compounds. Biography Early life and education Klaus Schmiegel was born in Chemnitz, Germany on June 28, 1939. After he immigrated to the United States in 1951, Schmiegel received a B.S. in chemistry from the University of Michigan, an A.M. in organic chemistry from Dartmouth College, and a Ph.D in organic chemistry from Stanford University. His strong educational background secured him a prestigious position as a senior organic chemist at Eli Lilly, a prominent pharmaceutical company. Primary accomplishment At Eli Lilly in the 1960s, scientists Klaus Schmiegel and Bryan Molloy, with the help of David Wong and Ray Fuller, searched for a compound to combat depression. Because depression and similar psychiatric disorders are associated with reduced serotonin levels, they focused their approach on prohibiting serotonin reuptake. During a regular nerve signal transmission, a neurotransmitter such as serotonin travels from a presynaptic neuron to a postsynaptic neuron; the neurotransmitter returns to the presynaptic neuron after fulfilling its function, the reuptake process. Therefore, slowing and diminishing serotonin reuptake boosts serotonin levels in the brain. The scientists based their search on the template of the antihistamine drug diphenhydramine hydrochloride, commonly known as Benadryl. After many failures, the research team synthesized a group of compounds called aryloxyphenylpropylamines. Upon testing, a member of the group, fluoxetine hydrochloride, proved to affect only the neurotransmitter serotonin. This compound became the first selective serotonin reuptake inhibitor (SSRI) and the active ingredient in the vastly popular and effective drug Prozac. Prozac, the "Wonder Drug" Eli Lilly recognized the potential of its new drug, but the company first tested it as a high blood pressure medication, an anti-obesity drug, and a remedy for severe depression. After those testing failures, Eli Lilly succeeded in treating five mildly depressed people; fluoxetine had found its niche. Eli Lilly announced its findings in 1974 and launched Prozac in 1987 after receiving FDA approval. The “wonder drug” replaced earlier medications, tricyclic antidepressants, which were less effective with serious side effects such as headaches, blurred vision and hypertension. By 1999, Prozac was bringing in $2.5 billion per year, 25% of Eli Lilly’s revenue. The drug helped erase the stigma of depression, inspiring celebrities and public figures to flaunt rather than hide their sufferings. Prozac, which is recognized by Fortune magazine as a “Product of the Century,” has few side effects; it has been widely beneficial for those suffering from depression, obsessive compulsive disorders, panic disorders, eating disorders and premenstrual dysphoric disorders. However, some contend that Prozac has been doled out too liberally—it has even been prescribed for animals. Peer drugs, including Zoloft and Paxil, which are also SSRIs, have experienced similar successes. Unfortunately for Eli Lilly, its patent on Prozac expired in 2001, causing massive revenue losses. The company
</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.