Question: how many national parks are there in england and wales
[{'answer': 'thirteen', 'provenance': [{'wikipedia_id': '44592', 'title': 'National parks of England and Wales', 'start_paragraph_id': 2, 'start_character': 20, 'end_paragraph_id': 2, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44592', 'title': 'National parks of England and Wales', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 155, 'bleu_score': 0.759907656827929, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7807209171252850645}, 'section': 'Section::::Abstract.'}]}]