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: Oregon boundary settlement | Statement: [United States territorial expansion, hasPart, Oregon boundary settlement]

Target entity: Oregon boundary settlement
Context triple: [United States territorial expansion, hasPart, Oregon boundary settlement]

• A. Convention of 1818 chosen
  The Convention of 1818 was an agreement between the United States and Great Britain that settled parts of the U.S.-Canada boundary and established joint occupation of the Oregon Country.
• B. Gadsden Purchase agreement
  The Gadsden Purchase agreement was an 1853 treaty between the United States and Mexico in which the U.S. bought a strip of land in present-day southern Arizona and New Mexico to facilitate a southern transcontinental railroad and finalize the continental border.
• C. Oregon Country
  Oregon Country was a vast, historically contested region of the Pacific Northwest in North America, encompassing present-day Oregon, Washington, Idaho, and parts of British Columbia and Wyoming, that was jointly occupied by the United States and Britain in the early 19th century.
• D. Alaska Purchase
  The Alaska Purchase was the 1867 transaction in which the United States bought the Alaska territory from the Russian Empire, significantly expanding U.S. land holdings in North America.
• E. Nez Perce War
  The Nez Perce War was an 1877 conflict in which the U.S. Army pursued the Nez Perce tribe across the Pacific Northwest as they attempted a strategic retreat toward Canada rather than submit to forced relocation.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.