Question: who played bobby hill on hill street blues
[{'answer': 'Michael Warren', 'provenance': [{'wikipedia_id': '7164206', 'title': 'Michael Warren (actor)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7164206', 'title': 'Michael Warren (actor)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 47552654505163188}, 'section': 'Section::::Abstract.'}]}]