Question: actor who played sirius black in harry potter
[{'answer': 'Gary Oldman', 'provenance': [{'wikipedia_id': '213163', 'title': 'Gary Oldman', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '213163', 'title': 'Gary Oldman', 'start_paragraph_id': 28, 'start_character': 0, 'end_paragraph_id': 28, 'end_character': 1247, 'bleu_score': 0.9294355018753401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1247501070035170164}, 'section': 'Section::::Acting career.:Resurgence and franchise stardom (2004–2016).\n'}]}]