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>
early 1890s. It is even speculated that Gloeden was taught the (then difficult) art of photography by Plüschow himself. However, Gloeden soon eclipsed Plüschow, and later works by Plüschow were frequently erroneously attributed to Gloeden. From an artistic standpoint, Plüschow's work is somewhat inferior to Gloeden's, as his lighting is often too harsh and the poses of his models look quite stilted. Up until 1907, Plüschow's assistant Vincenzo Galdi secretly made work which he tried to pass off as Plüschow's own. However, Galdi's pictures lack elegance, often also feature females, and generally tend to border on the pornographic. Gallery Major exhibitions Royal Photographic Society, London: 1893 (21 pictures shown); 1895 (3); 1907 (10); 1908 (3) British Journal of Photography Exhibition, London, January 1909 (60 Gloeden prints, half of them studies of youths & maidens) Internationale Ausstellung zur Amateurphotographie, Berlin (1899) Baron Wilhelm von Gloeden, Kunsthalle Basel (1979) Wilhelm von Gloeden - Auch ich in Arkadien, MEWO Kunsthalle Memmingen (2008): 400 photos on exhibit, 800 in the catalog References Further reading Baron Wilhelm von Gloeden (1856–1931). Kunsthalle Basel (1979) Exhibition catalog, vol 4 devoted to von Gloeden (48 pages, 27 illus.). 'Wilhelm Von Pluschow and Wilhelm Von Gloeden': Two Photo Essays. (IN: Studies in Visual Communications. Volume 9, Number 2, Spring 1983). Roger Peyrefitte: Les Amours Singulières (Paris, Gallimard, 1949 & later editions) Peter Weiermair: Wilhelm Von Gloeden: Erotic Photographs. (Cologne, Taschen Verlag, 1994) Peter Weiermair: Wilhelm von Gloeden (Cologne, Taschen Verlag, 1996) (96 pages, mainly illus. 22 cm; text in Ger., Engl. & Fr.) Charles Leslie: Wilhelm Von Gloeden Photographer. A Brief Introduction to His Life and Work. (SoHo Photographic Publishers, New York, 1977) (143 pages, 31 cm). Library of Congress Catalog Card Number 77-83146. Charles Leslie: Wilhelm von Gloeden, 1856-1931: eine Einführung in Sein Leben u. Werk (Innsbruck, Allerheiligenpresse, 1980) (137 pages) (German edition of 1977 book) Ulrich Pohlmann: Wilhelm von Gloeden: Taormina, (Munich, Schirmer Mosel, 1998) (95 pages, 53 illus., 21 cm), German edition: English edition: (Dr Pohlmann is head of the photographic archive at the Munich City Museum.) Ulrich Pohlmann: Wilhelm von Gloeden. Sehnsucht nach Arkadien (Berlin, Nishen, 1987) (159 pages, mainly illus., 27x22cm) Issued in conjunction with an exhibition at the Stadt Museum, Munich. Roger Peyrefitte: Wilhelm von Gloeden, (biography and 50 pictures of nudes by Gloeden). Editions Textes Gais, Paris (2008), Tobias G. Natter & Peter Weiermair (editors): Et In Arcadia Ego: Turn-of-the-Century Photography (82 full page photographs, 25 by Gloeden, with introduction, assessment & biographical chronology; texts are in English & German.) (Edition Oehrli, Zurich, 2000) Jack Woody (ed.): Taormina: Wilhelm von Gloeden (Pasadena, Twelvetrees Press, 1986) (112 pages, mainly illus. 35 cm) (2nd edition 1990, 3rd 1997) Jean-Claude Lemagny: Photographs of the classic male nude, Baron Wilhelm von Gloeden (New York, Camera/Graphic Press, 1977) (105 pages, mainly illus. 24 cm) Hans-Joachim Schickedanz (ed.): Wilhelm von Gloeden. Akte in Arkadien (Dortmund, Harenberg, 1987) (167 pages, 80 illus., some double-paged, 17.5 cm) (New edition also 167 pages: Munich, Orbis, 2000 ) Vincenzo Galdi - Wilhelm von Gloeden - Wilhelm von Plüschow. Aktaufnahmen aus der Sammlung Scheid (Bibliothek des Blicks, Vol. 3: Aachen, Rimbaud-Verlag, 1993) (2nd revised edition 2009) Ekkehard Hieronimus: Wilhelm von Gloeden. Photographien als Beschwörung (Aachen, Rimbaud-Presse, 1982) (62 pages 21 cm) Zannier, Italo (ed.) Exhibition catalogue (Milano Palazzo della Ragione 2008): Wilhelm von Gloeden: fotografie, nudi, paesaggi, scene di genere (Florence, Alinari, 2008) (191 pages, 154 illus. of a wide range of subjects from the Fratelli Alinari & Milan Civic Photographic Archive collections, with detailed catalogue, 29 cm; text in Engl. & Ital.) Joseph Kiermeier-Debre & Fritz Franz Vogel (eds.): Wilhelm von Gloeden
</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.