Question: who was the star spangled banner written by
[{'answer': 'Francis Scott Key', 'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 1, 'start_character': 208, 'end_paragraph_id': 1, 'end_character': 225, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'John Stafford Smith', 'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 2, 'start_character': 66, 'end_paragraph_id': 2, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]