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: Pleistocene glaciation | Statement: [Lake Missoula basin, formedBy, Pleistocene glaciation]

Target entity: Pleistocene glaciation
Context triple: [Lake Missoula basin, formedBy, Pleistocene glaciation]

• A. Cenozoic glaciations
  Cenozoic glaciations are a series of major ice age cycles during the Cenozoic Era that saw extensive growth and retreat of continental ice sheets, profoundly shaping Earth’s climate and landscapes.
• B. Saalian glaciation
  The Saalian glaciation was a major Middle Pleistocene ice age in northern Europe, during which extensive ice sheets covered large parts of the continent.
• C. Last Glacial Period
  The Last Glacial Period was the most recent major ice age, spanning roughly 115,000 to 11,700 years ago, during which large ice sheets covered vast areas of North America, Europe, and Asia and global climates were significantly colder and drier than today.
• D. Kaigas glaciation
  The Kaigas glaciation was an early Neoproterozoic ice age event in Earth's history, preceding the more extensive Sturtian glaciation and representing one of the planet's significant pre-Cryogenian glacial episodes.
• E. Last Glacial Maximum
  The Last Glacial Maximum was the most recent period in Earth’s history when ice sheets reached their greatest extent, dramatically lowering sea levels and reshaping global climates and ecosystems.
• 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: Pleistocene glaciation
Triple: [Lake Missoula basin, formedBy, Pleistocene glaciation]

Pleistocene glaciation refers to the series of extensive ice ages during the Pleistocene Epoch, when large ice sheets repeatedly advanced and retreated over vast areas of the Northern Hemisphere, dramatically reshaping landscapes and climates.

Target entity: Pleistocene glaciation
Target entity description: Pleistocene glaciation refers to the series of extensive ice ages during the Pleistocene Epoch, when large ice sheets repeatedly advanced and retreated over vast areas of the Northern Hemisphere, dramatically reshaping landscapes and climates.

• A. Cenozoic glaciations
  Cenozoic glaciations are a series of major ice age cycles during the Cenozoic Era that saw extensive growth and retreat of continental ice sheets, profoundly shaping Earth’s climate and landscapes.
• B. Saalian glaciation
  The Saalian glaciation was a major Middle Pleistocene ice age in northern Europe, during which extensive ice sheets covered large parts of the continent.
• C. Last Glacial Period
  The Last Glacial Period was the most recent major ice age, spanning roughly 115,000 to 11,700 years ago, during which large ice sheets covered vast areas of North America, Europe, and Asia and global climates were significantly colder and drier than today.
• D. Kaigas glaciation
  The Kaigas glaciation was an early Neoproterozoic ice age event in Earth's history, preceding the more extensive Sturtian glaciation and representing one of the planet's significant pre-Cryogenian glacial episodes.
• E. Last Glacial Maximum
  The Last Glacial Maximum was the most recent period in Earth’s history when ice sheets reached their greatest extent, dramatically lowering sea levels and reshaping global climates and ecosystems.
• F. None of above. chosen