Question: what is the national sport of the usa
[{'answer': 'Baseball', 'provenance': [{'wikipedia_id': '18360639', 'title': 'National sport', 'start_paragraph_id': 1, 'start_character': 155, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]