Question: who did leon play in the five heartbeats
[{'answer': 'J.T. Matthews', 'provenance': [{'wikipedia_id': '1625009', 'title': 'The Five Heartbeats', 'start_paragraph_id': 4, 'start_character': 50, 'end_paragraph_id': 4, 'end_character': 63, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '1625009', 'title': 'The Five Heartbeats', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 166, 'bleu_score': 0.9243880458347601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18393725010835579722}, 'section': 'Section::::Cast and characters.:The Five Heartbeats.\n'}]}]