Question: how many culvers are there in the us
[{'answer': '665'}, {'provenance': [{'wikipedia_id': '1251555', 'title': "Culver's", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 470, 'bleu_score': 0.665038661822228, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2250187209258638993}, 'section': 'Section::::Abstract.'}]}]