Question: when did carrie underwood take over sunday night football
[{'answer': 'May 7 , 2013', 'provenance': [{'wikipedia_id': '3613092', 'title': 'NBC Sunday Night Football', 'start_paragraph_id': 114, 'start_character': 17, 'end_paragraph_id': 114, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Theme music.\n'}]}, {'provenance': [{'wikipedia_id': '3613092', 'title': 'NBC Sunday Night Football', 'start_paragraph_id': 114, 'start_character': 0, 'end_paragraph_id': 114, 'end_character': 90, 'bleu_score': 0.8781879837907131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3983190656836575578}, 'section': 'Section::::Theme music.\n'}]}]