Question: who led the argonauts in search of the golden fleece
[{'answer': 'Jason', 'provenance': [{'wikipedia_id': '77335', 'title': 'Golden Fleece', 'start_paragraph_id': 2, 'start_character': 35, 'end_paragraph_id': 2, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '77335', 'title': 'Golden Fleece', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 410, 'bleu_score': 0.679960949724241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17229001220181654960}, 'section': 'Section::::Abstract.'}]}]