Question: who sold the corporation that became united states steel corporation
[{'answer': 'Carnegie Steel Company', 'provenance': [{'wikipedia_id': '2516079', 'title': 'Carnegie Steel Company', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2516079', 'title': 'Carnegie Steel Company', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 493, 'bleu_score': 0.9751504244977051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14820384172461168328}, 'section': 'Section::::Abstract.'}]}]