Question: who lead the roundheads in the english civil war
[{'answer': 'Thomas Fairfax', 'provenance': [{'wikipedia_id': '69093', 'title': 'Roundhead', 'start_paragraph_id': 4, 'start_character': 57, 'end_paragraph_id': 4, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Beliefs.\n'}]}, {'provenance': [{'wikipedia_id': '69093', 'title': 'Roundhead', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 490, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3202962610750011576}, 'section': 'Section::::Beliefs.\n'}]}]