Triple

Target entity: Cascade Volcanic Arc (northern extension)
Context triple: [Mount Brew, partOf, Cascade Volcanic Arc (northern extension)]

• A. Cascade Volcanic Arc chosen
  The Cascade Volcanic Arc is a major chain of active and dormant volcanoes in western North America, stretching from northern California through Oregon and Washington into British Columbia.
• B. Bismarck volcanic arc
  The Bismarck volcanic arc is a chain of active volcanoes in Papua New Guinea formed by subduction-related tectonic processes along the Bismarck Sea region.
• C. Taconic volcanic arc
  The Taconic volcanic arc was an ancient chain of volcanoes active along the eastern margin of ancestral North America during the Ordovician period, whose collision and accretion played a key role in building the early Appalachian Mountains.
• D. Mariana volcanic arc
  The Mariana volcanic arc is a chain of active and dormant volcanoes in the western Pacific Ocean formed by the subduction of the Pacific Plate beneath the Philippine Sea Plate.
• E. Alaska Panhandle volcanic belt
  The Alaska Panhandle volcanic belt is a chain of volcanoes and related volcanic features in southeastern Alaska associated with tectonic activity along the Pacific–North American plate boundary.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.