Question: who improved the steam engine produced by new comen
[{'answer': 'James Watt', 'provenance': [{'wikipedia_id': '165062', 'title': 'Newcomen atmospheric engine', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '165062', 'title': 'Newcomen atmospheric engine', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 333, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7144887703119794076}, 'section': 'Section::::Abstract.'}]}]