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: 御母衣ダム | Statement: [庄川, 主なダム, 御母衣ダム]

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: 御母衣ダム
Triple: [庄川, 主なダム, 御母衣ダム]

御母衣ダムは、岐阜県の庄川上流に建設された日本有数のロックフィルダムで、発電や洪水調節などを目的とした大規模多目的ダムである。

Target predicate: 主なダム
Context triple: [庄川, 主なダム, 御母衣ダム]

• A. isTributaryDamOf
  Indicates that a dam is constructed on and regulates the flow of a tributary river or stream relative to a main watercourse.
• B. hasMajorDams chosen
  Indicates that the subject possesses or contains one or more significant dams, typically large or important water-retaining structures.
• C. 主なレジャー
  Indicates the primary or most common leisure activity associated with an entity.
• D. upstreamDam
  Indicates that one entity is located or positioned upstream of another entity in relation to a dam, typically affecting or influenced by the dam’s presence or operation.
• E. isMajorDamOf
  Indicates that one dam is the primary or most significant dam associated with a particular river, reservoir, or water system.
• F. None of above.