Question: what kind of bats do they use in college baseball
[{'answer': 'metal bat', 'provenance': [{'wikipedia_id': '1370306', 'title': 'College baseball', 'start_paragraph_id': 21, 'start_character': 88, 'end_paragraph_id': 21, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Metal versus wood bat.\n'}]}, {'provenance': [{'wikipedia_id': '1370306', 'title': 'College baseball', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 850, 'bleu_score': 0.9874601949752461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6471164747073302481}, 'section': 'Section::::Metal versus wood bat.\n'}]}]