Question: who played cameron on ferris bueller's day off
[{'answer': 'Alan Douglas Ruck', 'provenance': [{'wikipedia_id': '626133', 'title': 'Alan Ruck', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '626133', 'title': 'Alan Ruck', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 582, 'bleu_score': 0.9276281369144621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16935106208784534825}, 'section': 'Section::::Abstract.'}]}]