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: Copper River system | Statement: [Gulkana River, riverSystem, Copper River system]

Target entity: Copper River system
Context triple: [Gulkana River, riverSystem, Copper River system]

• A. Copper River Basin
  The Copper River Basin is a broad interior region of southcentral Alaska characterized by glacially fed rivers, wetlands, and tundra, known for its rich wildlife habitat and subsistence resources.
• B. Alaska river system
  The Alaska river system is the extensive network of rivers and tributaries that drain Alaska’s diverse landscapes, supporting rich ecosystems, transportation, and subsistence activities across the state.
• C. Copper River chosen
  The Copper River is a major glacial-fed river in south-central Alaska known for its rich salmon runs, extensive delta, and dramatic canyon landscapes.
• D. Wrangell–St. Elias National Park and Preserve river system
  The Wrangell–St. Elias National Park and Preserve river system is an extensive network of glacially fed rivers and streams in Alaska that drain the park’s vast mountain ranges and wilderness landscapes.
• E. Lewis River
  The Lewis River is a tributary of the Columbia River in southwestern Washington State, known for its hydroelectric dams, scenic gorges, and popular fishing and recreation areas.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.