Question: when did they start wearing helmets in baseball
[{'answer': '1908', 'provenance': [{'wikipedia_id': '525071', 'title': 'Batting helmet', 'start_paragraph_id': 3, 'start_character': 386, 'end_paragraph_id': 3, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Early concepts (1905–1920s).\n'}]}, {'provenance': [{'wikipedia_id': '525071', 'title': 'Batting helmet', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 581, 'bleu_score': 0.9802931511945101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14697707432351266380}, 'section': 'Section::::Early concepts (1905–1920s).\n'}]}]