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: Alaska Purchase treaty | Statement: [Russian Alaska, significantEvent, Alaska Purchase treaty]

Target entity: Alaska Purchase treaty
Context triple: [Russian Alaska, significantEvent, Alaska Purchase treaty]

• A. Alaska Purchase chosen
  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.
• 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. Treaty of Point No Point
  The Treaty of Point No Point was an 1855 agreement between the United States and several Native American tribes in the Puget Sound region that ceded tribal lands in exchange for reservations, payments, and fishing rights.
• D. Treaty of Portsmouth
  The Treaty of Portsmouth was the 1905 peace agreement, mediated by U.S. President Theodore Roosevelt in New Hampshire, that ended the Russo-Japanese War and marked Japan’s emergence as a major world power.
• E. Harris Treaty of 1858
  The Harris Treaty of 1858 was a landmark U.S.–Japan agreement that opened Japanese ports to American trade, granted extraterritorial rights to U.S. citizens, and marked a key step in ending Japan’s isolationist policies.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.