Question: who plays the sergeant. in full metal jacket
[{'answer': 'Ronald Lee Ermey', 'provenance': [{'wikipedia_id': '262457', 'title': 'R. Lee Ermey', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]