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: Sarmatian steppe frontier | Statement: [Augustan wars, hasLocation, Sarmatian steppe frontier]

Target entity: Sarmatian steppe frontier
Context triple: [Augustan wars, hasLocation, Sarmatian steppe frontier]

• A. Roman–Sasanian frontier zone
  The Roman–Sasanian frontier zone was the long-contested border region between the Roman (later Byzantine) Empire and the Sasanian Persian Empire, marked by frequent wars, fortified cities, and shifting spheres of influence across the Near East.
• 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. Sarmatia chosen
  Sarmatia was an ancient region of Eastern Europe inhabited by Sarmatian tribes, roughly corresponding to parts of modern Ukraine, southern Russia, and adjacent areas north of the Black Sea and Caspian Sea.
• D. Roman–Parthian frontier zone
  The Roman–Parthian frontier zone was the contested border region between the Roman and Parthian Empires, marked by fortified cities, shifting control, and frequent military and diplomatic encounters.
• E. Scythian wilderness
  The Scythian wilderness is the remote, desolate region in ancient Scythia that serves as the bleak and isolated backdrop for Aeschylus’ tragedy "Prometheus Bound."
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.