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: Tigris–Euphrates river system | Statement: [Commander-in-Chief, Mesopotamian Expeditionary Force, theatreOfOperations, Tigris–Euphrates river system]

Target entity: Tigris–Euphrates river system
Context triple: [Commander-in-Chief, Mesopotamian Expeditionary Force, theatreOfOperations, Tigris–Euphrates river system]

• A. Tigris–Euphrates river system chosen
  The Tigris–Euphrates river system is a major river network in Western Asia that nurtured the ancient civilizations of Mesopotamia and remains vital to the region’s ecology, agriculture, and human settlement.
• B. Euphrates
  The Euphrates is one of Western Asia’s longest and most historically significant rivers, flowing through modern-day Turkey, Syria, and Iraq and forming part of the cradle of ancient Mesopotamian civilization.
• C. Tigris
  The Tigris is a major river in Western Asia that, together with the Euphrates, forms the historical Mesopotamian heartland and flows through modern-day Turkey, Syria, and Iraq.
• D. Diyala River
  The Diyala River is a significant river in eastern Iraq and western Iran that flows through the Zagros Mountains before joining the Tigris near Baghdad, supporting agriculture and settlements along its course.
• E. Tigris River corridor
  The Tigris River corridor is a fertile and strategically important stretch of land following the Tigris River through central Iraq, hosting key cities, agriculture, and transport routes.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.