Question: who builds the walls of thebes with song
[{'answer': 'Amphion', 'provenance': [{'wikipedia_id': '60785', 'title': 'Amphion and Zethus', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '60785', 'title': 'Amphion and Zethus', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 385, 'bleu_score': 0.970362113628587, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 320580528178692653}, 'section': 'Section::::Mythology.:Rule of Thebes.\n'}]}]