Question: who plays gabriel dean in rizzoli and isles
[{'answer': 'Billy Burke', 'provenance': [{'wikipedia_id': '27649750', 'title': 'Rizzoli & Isles', 'start_paragraph_id': 9, 'start_character': 685, 'end_paragraph_id': 9, 'end_character': 696, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'provenance': [{'wikipedia_id': '27649750', 'title': 'Rizzoli & Isles', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 336, 'bleu_score': 0.9645876452711911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5055135618109509928}, 'section': 'Section::::Cast and characters.:Recurring cast and characters.\n'}]}]