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: Leadville silver boom | Statement: [Lake County, Colorado, hasHistoricEvent, Leadville silver boom]

Target entity: Leadville silver boom
Context triple: [Lake County, Colorado, hasHistoricEvent, Leadville silver boom]

• A. Colorado silver boom chosen
  The Colorado silver boom was a late 19th-century mining rush that rapidly transformed Colorado’s economy and society through large-scale silver discoveries and speculative wealth.
• B. Montana gold rush
  The Montana gold rush was a mid-19th-century mining boom in what is now Montana that drew thousands of prospectors, rapidly spurred settlement, and transformed the region’s economy and towns.
• C. Black Hills Gold Rush
  The Black Hills Gold Rush was a late-19th-century gold boom in the Black Hills of present-day South Dakota and Wyoming that drew thousands of prospectors onto sacred Lakota lands, intensifying conflicts between the U.S. government and Native American tribes.
• D. Colorado Gold Rush
  The Colorado Gold Rush was a mid-19th-century mining boom that drew tens of thousands of prospectors to the Rocky Mountains, spurring rapid settlement and economic development in what is now the state of Colorado.
• E. Comstock Lode area
  The Comstock Lode area is a historically significant mining district in Nevada famed for its rich silver ore deposits that spurred a major 19th-century mining boom and helped drive U.S. economic growth.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.