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: Northern Dvina river system | Statement: [Sukhona River, partOf, Northern Dvina river system]

Target entity: Northern Dvina river system
Context triple: [Sukhona River, partOf, Northern Dvina river system]

• A. Northern Dvina River
  The Northern Dvina River is a major waterway in northwestern Russia that flows into the White Sea and has long served as an important route for trade and transport.
• B. Western Dvina River
  The Western Dvina River, also known as the Daugava, is a major Eastern European river flowing from Russia through Belarus and Latvia into the Baltic Sea.
• C. Northern Dvina river basin chosen
  The Northern Dvina river basin is a large drainage area in northern European Russia whose rivers flow into the White Sea, encompassing extensive forested and rural regions.
• D. Volga–Kama river system
  The Volga–Kama river system is a major interconnected river network in European Russia, centered on the Volga and Kama rivers and their tributaries, that drains a vast portion of the East European Plain into the Caspian Sea.
• E. Vyatka River
  The Vyatka River is a major river in western Russia that flows through the Kirov and Nizhny Novgorod regions and plays an important role in regional transport, ecology, and settlement.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.