Question: who was the person that led the turnaround at the jamestown colony
[{'answer': 'Sir Thomas Dale', 'provenance': [{'wikipedia_id': '75804', 'title': 'Jamestown, Virginia', 'start_paragraph_id': 28, 'start_character': 423, 'end_paragraph_id': 28, 'end_character': 438, 'bleu_score': 1.0, 'section': 'Section::::Settlement.:1610–1624: Rising fortunes.\n'}]}, {'provenance': [{'wikipedia_id': '75804', 'title': 'Jamestown, Virginia', 'start_paragraph_id': 28, 'start_character': 0, 'end_paragraph_id': 28, 'end_character': 865, 'bleu_score': 0.9449446422709651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9239690604129746657}, 'section': 'Section::::Settlement.:1610–1624: Rising fortunes.\n'}]}]