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 postal codes in the Czech Republic Postal codes in the Czech Republic consist of 5 numbers, usually written with a space following the third digit (e.g. 123 45). Postal codes In general, the first three digits in the postal code represents the city or district. Note that the correspondence between postal code groupings and Czech Regions is not exact. 100 00 - 199 99 Prague 100 00 - 109 99 Prague 10 and Prague 11 110 00 - 119 99 Prague 1 120 00 - 129 99 Prague 2 130 00 - 139 99 Prague 3 140 00 - 149 99 Prague 4 150 00 - 159 99 Prague 5 160 00 - 169 99 Prague 6 170 00 - 179 99 Prague 7 180 00 - 189 99 Prague 8 190 00 - 199 99 Prague 9 250 00 - 295 99 Central Bohemian Region 250 00 - 251 99 Prague-East District 252 00 - 254 99 Prague-West District 256 00 - 259 99 Benešov District 261 00 - 264 99 Příbram District 266 00 - 268 99 Beroun District 269 00 - 271 99 Rakovník District 272 00 - 274 99 Kladno District 276 00 - 278 99 Mělník District 280 00 - 282 99 Kolín District 284 00 - 286 99 Kutná Hora District 288 00 - 290 99 Nymburk District 293 00 - 295 99 Mladá Boleslav District 301 00 - 349 99 Plzeň Region 301 00 - 326 99 Plzeň - City District 330 00 - 331 99 Plzeň-North District 332 00 - 336 99 Plzeň-South District 337 00 - 338 99 Rokycany District 339 00 - 342 99 Klatovy District 344 00 - 346 99 Domažlice District 347 00 - 349 99 Tachov District 350 00 - 364 99 Karlovy Vary Region 350 00 - 353 99 Cheb District 356 00 - 358 99 Sokolov District 360 00 - 364 99 Karlovy Vary District 370 00 - 399 99 South Bohemian Region 370 00 - 375 99 České Budějovice District 377 00 - 380 99 Jindřichův Hradec District 381 00 - 382 99 Český Krumlov District 383 00 - 385 99 Prachatice District 386 00 - 389 99 Strakonice District 390 00 - 392 99 Tábor District 393 00 - 396 99 Pelhřimov District *technically in the Vysočina region 397 00 - 399 99 Písek District 400 00 - 441 99 Ústí nad Labem Region 400 00 - 403 99 Ústí nad Labem District 405 00 - 408 99 Děčín District 410 00 - 413 99 Litoměřice District 415 00 - 419 99 Teplice District 430 00 - 432 99 Chomutov District 434 00 - 436 99 Most District 438 00 - 441 99 Louny District 460 00 - 473 99 Liberec Region 460 00 - 464 99 Liberec District 466 00 - 468 99 Jablonec nad Nisou District 470 00 - 473 99 Česká Lípa District 500 00 - 572 99 Hradec Králové and Pardubice Regions 500 00 - 504 99 Hradec Králové District 506 00 - 509 99 Jičín District 511 00 - 514 99 Semily District *technically in the Liberec region 516 00 - 518 99 Rychnov nad Kněžnou District 530 00 - 535 99 Pardubice District 537 00 - 539 99 Chrudim District 541 00 - 544 99 Trutnov District 547 00 - 552 99 Náchod District 560 00 - 566 99 Ústí nad Orlicí District 568 00 - 572 99 Svitavy District 580 00 - 595 99 Vysočina Region 580 00 - 584 99 Havlíčkův Brod District 586 00 - 589 99 Jihlava District 591 00 -
</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.