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: Gadsden Purchase | Statement: [Southwestern United States, historicalEvent, Gadsden Purchase]

Target entity: Gadsden Purchase
Context triple: [Southwestern United States, historicalEvent, Gadsden Purchase]

• A. Gadsden Purchase agreement chosen
  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.
• B. Louisiana Purchase
  The Louisiana Purchase was an 1803 land deal in which the United States bought a vast territory from France, doubling the nation's size and securing control of the Mississippi River region.
• C. 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.
• D. Treaty of Guadalupe Hidalgo
  The Treaty of Guadalupe Hidalgo was the 1848 peace agreement that ended the Mexican–American War and transferred vast territories from Mexico to the United States, shaping the modern U.S.–Mexico border.
• E. Missouri Compromise
  The Missouri Compromise was an 1820 U.S. federal statute that temporarily eased sectional tensions by admitting Missouri as a slave state and Maine as a free state while banning slavery in most of the remaining Louisiana Territory north of the 36°30′ parallel.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.