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: Vltava–Labe river system (via Berounka and Vltava) | Statement: [Plzeň river system, partOf, Vltava–Labe river system (via Berounka and Vltava)]

Target entity: Vltava–Labe river system (via Berounka and Vltava)
Context triple: [Plzeň river system, partOf, Vltava–Labe river system (via Berounka and Vltava)]

• A. Plzeň river system
  The Plzeň river system is a network of rivers and streams in and around the city of Plzeň in the Czech Republic, formed by several converging waterways that drain the surrounding region.
• B. Svratka–Dyje–Morava–Danube river system
  The Svratka–Dyje–Morava–Danube river system is a major Central European fluvial network that drains much of Moravia and surrounding regions into the Danube, ultimately contributing to the Black Sea basin.
• C. Vltava River chosen
  The Vltava River is the longest river in the Czech Republic, flowing through the capital city of Prague and serving as a central feature of its landscape and history.
• D. Váh River basin
  The Váh River basin is a major Central European drainage area in Slovakia that collects the waters of the Váh River and its tributaries, shaping the region’s hydrology, landscapes, and settlements.
• E. Morava river system
  The Morava river system is a major river network in Central and Southeast Europe, primarily draining parts of Serbia and surrounding regions before ultimately feeding into the Danube.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.