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>
List of 19th-century baseball players This is a list of 19th-century baseball players who have a biographic article. __NOTOC__ A John Abadie Ed Abbaticchio Bert Abbey Charlie Abbey Dan Abbott Frank Abercrombie Doc Adams George Adams Jim Adams Bob Addy Henry Adkinson Bill Ahearn John Ake Gus Alberts Nin Alexander Bob Allen Ham Allen Hezekiah Allen Jack Allen Myron Allen Pete Allen Andy Allison Art Allison Bill Allison Doug Allison Nick Altrock Billy Alvord Doc Amole Bill Anderson Dave Anderson John Anderson Varney Anderson Ed Andrews Jim Andrews Wally Andrews Fred Andrus Wiman Andrus Bill Annis Cap Anson Joe Ardner Robert Armstrong Billy Arnold Harry Arundel Tug Arundel Charlie Atherton Al Atkinson Ed Atkinson Henry Austin Jake Aydelott B Ed Bagley Gene Bagley Frank Bahret Harvey Bailey King Bailey Charlie Baker George Baker Kirtley Baker Norm Baker Phil Baker Jersey Bakley Kid Baldwin Lady Baldwin Mark Baldwin Art Ball Studs Bancker Jim Banning Jimmy Bannon Tom Bannon Charlie Barber Al Barker Sam Barkley Tom Barlow Bill Barnes Ross Barnes Billy Barnie Bob Barr Bill Barrett Jimmy Barrett John Barrett Marty Barrett Frank Barrows Shad Barry Charlie Bartson John Bass Charley Bassett Charlie Bastian Frank Bates John Bates Larry Battam Joe Battin Al Bauer George Bausewine Burley Bayer Jack Beach Dave Beadle Tommy Beals Alex Beam Ernie Beam Ollie Beard Ed Beatin Ginger Beaumont Edward Beavens Buck Becannon George Bechtel Erve Beck Frank Beck Bob Becker Jake Beckley Ed Beecher Steve Behel Ira Belden Charlie Bell Frank Bell Steve Bellán Jack Bellman Art Benedict Ike Benners Charlie Bennett Cy Bentley Marty Bergen Tun Berger John Bergh Frank Berkelbach Nate Berkenstock Curt Bernard Bill Bernhard Charlie Berry Tom Berry Harry Berthrong William Bestick Dan Bickham Ed Biecher Oscar Bielaski Lou Bierbauer Charles Bierman George Bignell Jud Birchall Frank Bird George Bird Dave Birdsall Bill Bishop Frank Bishop Red Bittmann Bob Black George Blackburn Bill Blair Dick Blaisdell Harry Blake Bob Blakiston Fred Blank Harvey Blauvelt Ned Bligh Frank Bliss Wes Blogg Joe Blong Steve Bloomer Frederick Boardman Charlie Bohn Boland Tommy Bond Frank Bonner George Boone Booth Amos Booth Eddie Booth George Borchers Joe Borden Andy Boswell Cy Bowen Frank Bowerman Frank Bowes Bill Bowman Sumner Bowman Bill Boyd Frank Boyd Jake Boyd Eddie Boyle Henry Boyle Jack Boyle Henry Boyle Al Bradley Bill Bradley Foghorn Bradley George Bradley Spike Brady Steve Brady Asa Brainard Mike Brannock Kitty Bransfield Kitty Brashear Alonzo Breitenstein Ted Breitenstein Jack Brennan Roger Bresnahan Buttons Briggs Charlie Briggs Grant Briggs Frank Brill Fatty Briody George Bristow Jim Britt Steve Brodie Henry Brooks Cal Broughton Dan Brouthers Charlie Brown Ed Brown Jim Brown Joe Brown John Brown Lew Brown Oliver Brown Robert Brown Stub Brown Tom Brown William Brown Pete Browning George Bryant Tod Brynan Fred Buckingham Dick Buckley John Buckley Jay Budd Fritz Buelow Charlie Buffinton Henry Buker Sim Bullas Josh Bunce Ernie Burch Bill Burdick Jack Burdock Dan Burke Eddie Burke James Burke Jimmy Burke Joe Burke Mike Burke William Burke Jesse Burkett Hercules Burnett Dick Burns Jim Burns John Burns Oyster Burns Tom Burns Buster Burrell Harry Burrell Al Burris Henry Burroughs Frank Burt Doc Bushong Bill Butler Dick Butler Frank Butler Kid Butler Frank Buttery C Charlie Cady John Cahill Tom Cahill Will Calihan Ed Callahan John Callahan Nixey Callahan Kid Camp Lew Camp Count Campau Hugh Campbell Mike Campbell Sam Campbell Sal Campfield Jim Canavan Bart Cantz John Carbine Roger Carey Scoops Carey Tom Carey Ed Carfrey Bobby Cargo Fred Carl Lew Carl Jim Carleton George Carman Jack Carney Hick Carpenter Charlie Carr Bill Carrick Chick Carroll Cliff Carroll Fred Carroll Pat Carroll
</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.