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: Eurasian Steppe cultural horizon | Statement: [Andronovo culture, partOf, Eurasian Steppe cultural horizon]

Target entity: Eurasian Steppe cultural horizon
Context triple: [Andronovo culture, partOf, Eurasian Steppe cultural horizon]

• A. Eurasian Steppe chosen
  The Eurasian Steppe is a vast belt of temperate grasslands stretching from Eastern Europe across Central Asia to Mongolia and northern China, historically serving as a major corridor for nomadic cultures, trade, and migration.
• B. Pontic–Caspian steppe
  The Pontic–Caspian steppe is a vast grassland region stretching from Eastern Europe into Central Asia, historically significant as a crossroads for nomadic cultures and early Indo-European migrations.
• C. Yamnaya culture
  The Yamnaya culture was a late Copper Age to early Bronze Age pastoralist society of the Pontic–Caspian steppe, often linked to the spread of Indo-European languages and steppe ancestry across Europe and parts of Asia.
• D. Kurgan archaeological horizon
  The Kurgan archaeological horizon is a broad prehistoric cultural complex of steppe societies known for their burial mounds and often associated with the spread of early Indo-European languages across Eurasia.
• E. The Steppe
  "The Steppe" is a novella by Anton Chekhov that vividly portrays a young boy’s journey across the vast Russian plains, emphasizing atmosphere, landscape, and psychological insight over plot.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.