Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Kamakura shogunate | Statement: [Jōkyū War, participant, Kamakura shogunate]

Target entity: Kamakura shogunate
Context triple: [Jōkyū War, participant, Kamakura shogunate]

• A. Kamakura period
  The Kamakura period was a pivotal era in Japanese history (1185–1333) marked by the rise of the samurai class and the establishment of the first shogunate government in Kamakura.
• B. Nanboku-chō period
  The Nanboku-chō period was a turbulent era in Japanese history (1336–1392) marked by the rivalry between the Northern and Southern imperial courts and prolonged civil war over legitimate imperial succession.
• C. Muromachi period
  The Muromachi period was a Japanese historical era (1336–1573) marked by Ashikaga shogunate rule, flourishing arts such as Noh and ink painting, and the growth of prosperous merchant cities like Sakai.
• D. Tokugawa shogunate
  The Tokugawa shogunate was the feudal military government that ruled Japan from the early 17th to the mid-19th century, overseeing a long period of peace, isolation, and strict social order.
• E. regency of the Hōjō clan
  The regency of the Hōjō clan was the hereditary military government in medieval Japan through which the Hōjō family effectively ruled the Kamakura shogunate as de facto leaders while shoguns served largely as figureheads.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Kamakura shogunate
Triple: [Jōkyū War, participant, Kamakura shogunate]

The Kamakura shogunate was Japan’s first military government, established by the Minamoto clan in the late 12th century, which marked the rise of the samurai class and ruled the country from Kamakura until the early 14th century.

Target entity: Kamakura shogunate
Target entity description: The Kamakura shogunate was Japan’s first military government, established by the Minamoto clan in the late 12th century, which marked the rise of the samurai class and ruled the country from Kamakura until the early 14th century.

• A. Kamakura period chosen
  The Kamakura period was a pivotal era in Japanese history (1185–1333) marked by the rise of the samurai class and the establishment of the first shogunate government in Kamakura.
• B. Nanboku-chō period
  The Nanboku-chō period was a turbulent era in Japanese history (1336–1392) marked by the rivalry between the Northern and Southern imperial courts and prolonged civil war over legitimate imperial succession.
• C. Muromachi period
  The Muromachi period was a Japanese historical era (1336–1573) marked by Ashikaga shogunate rule, flourishing arts such as Noh and ink painting, and the growth of prosperous merchant cities like Sakai.
• D. Tokugawa shogunate
  The Tokugawa shogunate was the feudal military government that ruled Japan from the early 17th to the mid-19th century, overseeing a long period of peace, isolation, and strict social order.
• E. regency of the Hōjō clan
  The regency of the Hōjō clan was the hereditary military government in medieval Japan through which the Hōjō family effectively ruled the Kamakura shogunate as de facto leaders while shoguns served largely as figureheads.
• F. None of above.