Question: sanford and son what was his wife's name
[{'answer': 'Elizabeth', 'provenance': [{'wikipedia_id': '208208', 'title': 'Sanford and Son', 'start_paragraph_id': 12, 'start_character': 469, 'end_paragraph_id': 12, 'end_character': 478, 'bleu_score': 1.0, 'section': 'Section::::Plot.:Series progression.\n'}]}, {'provenance': [{'wikipedia_id': '208208', 'title': 'Sanford and Son', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 732, 'bleu_score': 0.8791393895796391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10727234867909839658}, 'section': 'Section::::Characters.:Main.:Fred Sanford.\n'}]}]