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: Southern Ocean frontal system | Statement: [Antarctic Convergence, formsPartOf, Southern Ocean frontal system]

Target entity: Southern Ocean frontal system
Context triple: [Antarctic Convergence, formsPartOf, Southern Ocean frontal system]

• A. Indian Ocean subtropical gyre
  The Indian Ocean subtropical gyre is a large, clockwise-rotating system of ocean currents in the southern Indian Ocean that plays a key role in heat transport, climate regulation, and marine ecosystems.
• B. Antarctic Circumpolar Current chosen
  The Antarctic Circumpolar Current is the powerful, continuous ocean current that flows eastward around Antarctica, connecting the Atlantic, Pacific, and Indian Oceans and playing a key role in global climate and ocean circulation.
• C. Atlantic Meridional Overturning Circulation
  The Atlantic Meridional Overturning Circulation is a large-scale system of ocean currents that transports heat and salt through the Atlantic, strongly influencing regional and global climate.
• D. Antarctic Convergence
  The Antarctic Convergence is a major circumpolar oceanic boundary where cold Antarctic waters meet and sink beneath warmer sub-Antarctic waters, creating a sharp gradient in temperature and marine ecosystems.
• E. Ekman transport
  Ekman transport is an oceanographic process in which wind-driven surface waters move at an angle to the wind direction due to the Coriolis effect, causing net water transport perpendicular to the wind.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.