Question: who is the heisman trophy award named after
[{'answer': 'John Heisman', 'provenance': [{'wikipedia_id': '288191', 'title': 'Heisman Trophy', 'start_paragraph_id': 2, 'start_character': 278, 'end_paragraph_id': 2, 'end_character': 290, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '288191', 'title': 'Heisman Trophy', 'start_paragraph_id': 2, 'start_character': 14, 'end_paragraph_id': 2, 'end_character': 936, 'bleu_score': 0.9238478897594851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16336376353245507736}, 'section': 'Section::::Abstract.'}]}]