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: Arrowrock Reservoir | Statement: [Boise County, Idaho, contains, Arrowrock Reservoir]

Target entity: Arrowrock Reservoir
Context triple: [Boise County, Idaho, contains, Arrowrock Reservoir]

• A. La Mesa Reservoir
  La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
• B. Rocky Reach Reservoir
  Rocky Reach Reservoir is a man-made lake on the Columbia River in Washington State, formed by the impoundment of water behind Rocky Reach Dam and used for hydroelectric power, recreation, and wildlife habitat.
• C. Willow Creek Reservoir
  Willow Creek Reservoir is a man-made lake in northeastern Oregon that provides water storage, recreation, and flood control for the Heppner area.
• D. Lost Creek Reservoir
  Lost Creek Reservoir is a man-made lake in California used primarily for water storage, hydroelectric power generation, and recreation.
• E. Clark Canyon Reservoir
  Clark Canyon Reservoir is a man-made lake in southwestern Montana known for its trout fishing, irrigation storage, and recreational opportunities.
• 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: Arrowrock Reservoir
Triple: [Boise County, Idaho, contains, Arrowrock Reservoir]

Arrowrock Reservoir is a man-made lake on the Boise River in southwestern Idaho, created by Arrowrock Dam and used primarily for irrigation water storage and recreation.

Target entity: Arrowrock Reservoir
Target entity description: Arrowrock Reservoir is a man-made lake on the Boise River in southwestern Idaho, created by Arrowrock Dam and used primarily for irrigation water storage and recreation.

• A. La Mesa Reservoir
  La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
• B. Rocky Reach Reservoir
  Rocky Reach Reservoir is a man-made lake on the Columbia River in Washington State, formed by the impoundment of water behind Rocky Reach Dam and used for hydroelectric power, recreation, and wildlife habitat.
• C. Willow Creek Reservoir
  Willow Creek Reservoir is a man-made lake in northeastern Oregon that provides water storage, recreation, and flood control for the Heppner area.
• D. Lost Creek Reservoir
  Lost Creek Reservoir is a man-made lake in California used primarily for water storage, hydroelectric power generation, and recreation.
• E. Clark Canyon Reservoir
  Clark Canyon Reservoir is a man-made lake in southwestern Montana known for its trout fishing, irrigation storage, and recreational opportunities.
• F. None of above. chosen