Question: what is the name of us national anthem
[{'answer': 'The Star - Spangled Banner', 'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 57, 'start_character': 84, 'end_paragraph_id': 57, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Protests.:NAACP call to remove the national anthem.\n'}]}, {'provenance': [{'wikipedia_id': '31064', 'title': 'The Star-Spangled Banner', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 528, 'bleu_score': 0.795037381994936, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14454183225166440548}, 'section': 'Section::::Abstract.'}]}]