Question: who is the actor that plays buck on 911
[{'answer': 'Oliver Stark', 'provenance': [{'wikipedia_id': '54256234', 'title': '9-1-1 (TV series)', 'start_paragraph_id': 103, 'start_character': 128, 'end_paragraph_id': 103, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Production.:Casting.\n'}]}, {'provenance': [{'wikipedia_id': '54256234', 'title': '9-1-1 (TV series)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 60, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6360610384429487198}, 'section': 'Section::::Cast and characters.:Main.\n'}]}]