Question: how many wing stops are there in the united states
[{'answer': 'more than 1,000'}, {'answer': '1,000'}, {}, {'provenance': [{'wikipedia_id': '5171289', 'title': 'Wingstop', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10446026919131063584}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51003551', 'title': 'Wheels Up', 'section': 'Section::::History.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['Same Day Game Day shuttles to college football games. By 2014, the company had more than 1,000 members', 'tates-only membership, the company had sold 5,379 individual and 379 corporate memberships and owned 72 King Airs and 20 Citations. In 2017, Wheels Up flew 59,960 hours and covered close to . Wheels Up has exclusive rights to the Beechcraft King Air 350i,']}}]}]