Question: who played chip douglas on my three sons
[{'answer': 'Stanley Livingston', 'provenance': [{'wikipedia_id': '174002', 'title': 'My Three Sons', 'start_paragraph_id': 12, 'start_character': 182, 'end_paragraph_id': 12, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::History.:CBS years.\n'}]}, {'provenance': [{'wikipedia_id': '174002', 'title': 'My Three Sons', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 1239, 'bleu_score': 0.9905434697047311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9339858874846232007}, 'section': 'Section::::History.:CBS years.\n'}]}]