Question: who plays brian cassidy on law and order svu
[{'answer': 'Dean Winters', 'provenance': [{'wikipedia_id': '5058869', 'title': 'Brian Cassidy', 'start_paragraph_id': 1, 'start_character': 59, 'end_paragraph_id': 1, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5058869', 'title': 'Brian Cassidy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 571, 'bleu_score': 0.8574773147923571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4869863803770372563}, 'section': 'Section::::Abstract.'}]}]