Question: who won best actor academy award in 1969
[{'answer': 'Cliff Robertson', 'provenance': [{'wikipedia_id': '4368775', 'title': '41st Academy Awards', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4368775', 'title': '41st Academy Awards', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 431, 'bleu_score': 0.970795021215021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15389962441208197547}, 'section': 'Section::::Abstract.'}]}]