Question: who made a sewing machine that became a bestseller
[{'answer': 'Isaac Merritt Singer', 'provenance': [{'wikipedia_id': '85012', 'title': 'Sewing machine', 'start_paragraph_id': 12, 'start_character': 254, 'end_paragraph_id': 12, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::History.:Invention.\n'}]}, {'provenance': [{'wikipedia_id': '85012', 'title': 'Sewing machine', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 627, 'bleu_score': 0.9808590314834971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7793847059770057142}, 'section': 'Section::::History.:Industrial competition.\n'}]}]