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: Glacial Lake Missoula | Statement: [Lake Missoula basin, containsFormerly, Glacial Lake Missoula]

Target entity: Glacial Lake Missoula
Context triple: [Lake Missoula basin, containsFormerly, Glacial Lake Missoula]

• A. Lake Missoula basin
  Lake Missoula basin is the prehistoric glacial lake depression in the Pacific Northwest that once held vast volumes of meltwater responsible for the cataclysmic Missoula Floods.
• B. Glacial Lake Columbia
  Glacial Lake Columbia was a large prehistoric proglacial lake in the Pacific Northwest that played a key role in shaping regional landscapes during the last Ice Age.
• C. Channeled Scablands
  The Channeled Scablands are a rugged, eroded landscape in eastern Washington carved by cataclysmic Ice Age floods, featuring deep coulees, dry falls, and scoured basalt terrain.
• D. Lake Glacier
  Lake Glacier is a scenic man-made lake within Mill Creek Park in Youngstown, Ohio, popular for its picturesque views and recreational activities.
• E. White River Glacier
  White River Glacier is a mountain glacier on the southeastern flank of Mount Hood in Oregon, known for its crevasses, icefalls, and role in feeding the White River watershed.
• 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: Glacial Lake Missoula
Triple: [Lake Missoula basin, containsFormerly, Glacial Lake Missoula]

Glacial Lake Missoula was a massive prehistoric proglacial lake in what is now Montana whose catastrophic Ice Age floods repeatedly reshaped the landscapes of the Pacific Northwest.

Target entity: Glacial Lake Missoula
Target entity description: Glacial Lake Missoula was a massive prehistoric proglacial lake in what is now Montana whose catastrophic Ice Age floods repeatedly reshaped the landscapes of the Pacific Northwest.

• A. Lake Missoula basin chosen
  Lake Missoula basin is the prehistoric glacial lake depression in the Pacific Northwest that once held vast volumes of meltwater responsible for the cataclysmic Missoula Floods.
• B. Glacial Lake Columbia
  Glacial Lake Columbia was a large prehistoric proglacial lake in the Pacific Northwest that played a key role in shaping regional landscapes during the last Ice Age.
• C. Channeled Scablands
  The Channeled Scablands are a rugged, eroded landscape in eastern Washington carved by cataclysmic Ice Age floods, featuring deep coulees, dry falls, and scoured basalt terrain.
• D. Lake Glacier
  Lake Glacier is a scenic man-made lake within Mill Creek Park in Youngstown, Ohio, popular for its picturesque views and recreational activities.
• E. White River Glacier
  White River Glacier is a mountain glacier on the southeastern flank of Mount Hood in Oregon, known for its crevasses, icefalls, and role in feeding the White River watershed.
• F. None of above.