Question: who played the joker in full metal jacket
[{'answer': 'Matthew Modine', 'provenance': [{'wikipedia_id': '11701', 'title': 'Full Metal Jacket', 'start_paragraph_id': 1, 'start_character': 104, 'end_paragraph_id': 1, 'end_character': 118, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]