Question: who developed a method to mass-produce steel in america
[{'answer': 'Henry Bessemer', 'provenance': [{'wikipedia_id': '40180', 'title': 'Bessemer process', 'start_paragraph_id': 3, 'start_character': 63, 'end_paragraph_id': 3, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40180', 'title': 'Bessemer process', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 269, 'bleu_score': 0.957870874785216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4574401917411485103}, 'section': 'Section::::Abstract.'}]}]