Question: once upon a time who is mr gold son
[{'answer': 'Baelfire / Neal Cassidy', 'provenance': [{'wikipedia_id': '40917623', 'title': 'Mr. Gold', 'start_paragraph_id': 4, 'start_character': 416, 'end_paragraph_id': 4, 'end_character': 441, 'bleu_score': 1.0, 'section': 'Section::::Character background.:Season 1 and 2.\n'}]}, {'answer': 'Gideon', 'provenance': [{'wikipedia_id': '40917623', 'title': 'Mr. Gold', 'start_paragraph_id': 4, 'start_character': 442, 'end_paragraph_id': 4, 'end_character': 448, 'bleu_score': 1.0, 'section': 'Section::::Character background.:Season 1 and 2.\n'}]}, {'provenance': [{'wikipedia_id': '40917623', 'title': 'Mr. Gold', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 536, 'bleu_score': 0.961928649275358, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 538476031581403515}, 'section': 'Section::::Character background.:Season 1 and 2.\n'}]}]