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: Pontic–Caspian steppe | Statement: [Indo-Europeans, regionOfOriginHypothesis, Pontic–Caspian steppe]

Target entity: Pontic–Caspian steppe
Context triple: [Indo-Europeans, regionOfOriginHypothesis, Pontic–Caspian steppe]

• A. Pontic–Caspian steppe chosen
  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.
• B. Eurasian Steppe
  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.
• C. Russian Plain
  The Russian Plain is a vast lowland region in Eastern Europe that forms the core of European Russia and features extensive flat terrain, rivers, and fertile soils.
• D. Ural region
  The Ural region is a historical and geographical area of Russia centered around the Ural Mountains, traditionally seen as a boundary between Europe and Asia and known for its rich mineral resources and industrial centers.
• E. Central Asia
  Central Asia is a vast, landlocked region of Eurasia characterized by its historical Silk Road crossroads, diverse Turkic, Persian, and Russian cultural influences, and predominantly steppe and desert landscapes.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: regionOfOriginHypothesis
Context triple: [Indo-Europeans, regionOfOriginHypothesis, Pontic–Caspian steppe]

• A. hasLanguageOfOrigin
  Indicates that one entity has its origin or source in the language specified by another entity.
• B. ethnicOrigin
  Indicates the relationship where an entity is associated with a particular ethnic group or ancestry.
• C. placeOfOrigin chosen
  Indicates the location or source from which an entity originally comes or was created.
• D. laterCountryOfOrigin
  Indicates that an entity’s country of origin changed, and this predicate specifies the country that became its origin at a later time than a previously associated country.
• E. countryOfOrigin
  Indicates the country from which an entity originally comes or was first produced, created, or established.
• F. None of above.