Question: when did francis scott key write the lyrics that became the national anthem
[{'answer': 'September 14 , 1814', 'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 1, 'start_character': 140, 'end_paragraph_id': 1, 'end_character': 159, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 545, 'bleu_score': 0.926871543660096, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16832819617833986976}, 'section': 'Section::::Abstract.'}]}]