Question: how many players on the field for football
[{'answer': 'two teams of eleven players', 'provenance': [{'wikipedia_id': '18951490', 'title': 'American football', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 156, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18951490', 'title': 'American football', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 952, 'bleu_score': 0.9539077072863781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17669534617132132609}, 'section': 'Section::::Abstract.'}]}]