Question: where did the steel industry first emerge in the united states
[{'answer': 'Pittsburgh', 'provenance': [{'wikipedia_id': '8911974', 'title': 'History of the steel industry (1850–1970)', 'start_paragraph_id': 32, 'start_character': 182, 'end_paragraph_id': 32, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::United States.\n'}]}, {'provenance': [{'wikipedia_id': '8911974', 'title': 'History of the steel industry (1850–1970)', 'start_paragraph_id': 32, 'start_character': 0, 'end_paragraph_id': 32, 'end_character': 329, 'bleu_score': 0.935076192554366, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14243850345442565727}, 'section': 'Section::::United States.\n'}]}]