Question: who wrote a hard rains gonna fall
[{'answer': 'Bob Dylan', 'provenance': [{'wikipedia_id': '1893538', 'title': "A Hard Rain's a-Gonna Fall", 'start_paragraph_id': 1, 'start_character': 50, 'end_paragraph_id': 1, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1893538', 'title': "A Hard Rain's a-Gonna Fall", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 300, 'bleu_score': 0.913499617140693, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 602640654839163106}, 'section': 'Section::::Abstract.'}]}]