Question: who hikes the ball to the quarterback in football
[{'answer': 'Center', 'provenance': [{'wikipedia_id': '2321562', 'title': 'Center (gridiron football)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2321562', 'title': 'Center (gridiron football)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 373, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1472424031544672688}, 'section': 'Section::::Abstract.'}]}]