Question: who went to the underworld in greek mythology
[{'answer': 'Orpheus', 'provenance': [{'wikipedia_id': '5355670', 'title': 'Greek underworld', 'start_paragraph_id': 47, 'start_character': 78, 'end_paragraph_id': 47, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Deities.:Cerberus.\n'}]}, {'provenance': [{'wikipedia_id': '5355670', 'title': 'Greek underworld', 'start_paragraph_id': 72, 'start_character': 0, 'end_paragraph_id': 72, 'end_character': 918, 'bleu_score': 0.9880591662583851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2618125455277920909}, 'section': 'Section::::Myths and stories.:Orpheus.\n'}]}]