Question: What division of the American armed forces fought the Imperial Japanese Army, also know as the "Dai-Nippon Teikoku Rikugun", or "Army of the Greater Japanese Empire", at Bougainville during World War Two?
{'answer': 'Marine Corps', 'supporting_facts': [['Battle of Hellzapoppin Ridge and Hill 600A', 0], ['Imperial Japanese Army', 0]]}