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: American westward expansion | Statement: [Serrano tribes, affectedBy, American westward expansion]

Target entity: American westward expansion
Context triple: [Serrano tribes, affectedBy, American westward expansion]

• A. United States territorial expansion chosen
  United States territorial expansion refers to the historical process by which the United States grew from a cluster of Atlantic coast colonies into a transcontinental nation through purchases, wars, treaties, and settlement.
• B. WesternDevelopmentStrategy
  WesternDevelopmentStrategy is a long-term Chinese government initiative aimed at accelerating economic growth and reducing regional disparities in the country’s western and inland provinces through large-scale investment and policy support.
• C. Northern Expansion Doctrine
  The Northern Expansion Doctrine was an Imperial Japanese military and political strategy that advocated expansion into Siberia and the Soviet Far East to secure resources and strategic dominance.
• D. Southern Expansion Doctrine
  The Southern Expansion Doctrine was an early 20th-century Japanese imperialist strategy advocating political, economic, and military expansion into Southeast Asia and the Pacific.
• E. frontier thesis
  The frontier thesis is a theory proposed by historian Frederick Jackson Turner that argues the American frontier experience fundamentally shaped the nation’s democracy, culture, and identity.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.