Question: how many rv parks are there in the united states
[{'answer': 'over 1,600 state parks', 'provenance': [{'wikipedia_id': '1263097', 'title': 'RV park', 'start_paragraph_id': 37, 'start_character': 339, 'end_paragraph_id': 37, 'end_character': 361, 'bleu_score': 1.0, 'section': 'Section::::RV parks by region.:North America.\n'}]}, {'answer': 'over 13,000 privately owned RV parks'}, {'provenance': [{'wikipedia_id': '1263097', 'title': 'RV park', 'start_paragraph_id': 37, 'start_character': 0, 'end_paragraph_id': 37, 'end_character': 531, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14686862911485328694}, 'section': 'Section::::RV parks by region.:North America.\n'}]}]