Question: who played tom joad in grapes of wrath
[{'answer': 'Henry Fonda', 'provenance': [{'wikipedia_id': '4350811', 'title': 'The Grapes of Wrath (film)', 'start_paragraph_id': 5, 'start_character': 30, 'end_paragraph_id': 5, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '4350811', 'title': 'The Grapes of Wrath (film)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 970, 'bleu_score': 0.9539806608273451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13879024755210136546}, 'section': 'Section::::Plot.\n'}]}]