Question: who played robbie douglas wife on my three sons
[{'answer': 'Tina Cole', 'provenance': [{'wikipedia_id': '174002', 'title': 'My Three Sons', 'start_paragraph_id': 13, 'start_character': 706, 'end_paragraph_id': 13, 'end_character': 715, 'bleu_score': 1.0, 'section': 'Section::::History.:CBS years.\n'}]}, {'provenance': [{'wikipedia_id': '174002', 'title': 'My Three Sons', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 1521, 'bleu_score': 0.9639434979538011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6935781122562083212}, 'section': 'Section::::History.:CBS years.\n'}]}]