Question: why were the doors to the exits and stairwells locked in this factory
[{'answer': 'to reduce theft', 'provenance': [{'wikipedia_id': '352479', 'title': 'Triangle Shirtwaist Factory fire', 'start_paragraph_id': 3, 'start_character': 137, 'end_paragraph_id': 3, 'end_character': 152, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'to prevent workers from taking unauthorized breaks'}, {'provenance': [{'wikipedia_id': '352479', 'title': 'Triangle Shirtwaist Factory fire', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 476, 'bleu_score': 0.8979191191747671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9374024941760389366}, 'section': 'Section::::Abstract.'}]}]