Question: who is the actor who played sirius black
[{'answer': 'Gary Leonard Oldman', 'provenance': [{'wikipedia_id': '213163', 'title': 'Gary Oldman', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '213163', 'title': 'Gary Oldman', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 191, 'bleu_score': 0.520655000639419, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6896432274622884124}, 'section': 'Section::::Abstract.'}]}]