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: Sierra Maestra campaign | Statement: [Battle of El Uvero, theater, Sierra Maestra campaign]

Target entity: Sierra Maestra campaign
Context triple: [Battle of El Uvero, theater, Sierra Maestra campaign]

• A. Sierra Maestra campaign chosen
  The Sierra Maestra campaign was the guerrilla warfare phase of the Cuban Revolution in which Fidel Castro’s rebel forces, operating from the Sierra Maestra mountains, built strength and popular support leading to the overthrow of Fulgencio Batista.
• B. Las Villas campaign
  The Las Villas campaign was a key late-stage military offensive of the Cuban Revolution in which rebel forces advanced through central Cuba, helping to topple the Batista regime.
• C. Battle of La Guaira
  The Battle of La Guaira was a 1743 naval engagement off the Venezuelan port of La Guaira in which Spanish colonial forces repelled a British attack during the War of Jenkins' Ear.
• D. Battle of Las Guasimas
  The Battle of Las Guasimas was an early engagement of the Spanish–American War in Cuba, where U.S. and Cuban forces clashed with Spanish troops shortly before the more famous assaults on San Juan Heights.
• E. Apure campaign
  The Apure campaign was a key military offensive during the Venezuelan War of Independence, led by Simón Bolívar’s forces across the Apure plains as part of the broader Llanero campaigns against Spanish royalist control.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.