Question: who played the dentist in little shop of horrors
[{'answer': 'Steve Martin', 'provenance': [{'wikipedia_id': '3447166', 'title': 'Little Shop of Horrors (film)', 'start_paragraph_id': 1, 'start_character': 499, 'end_paragraph_id': 1, 'end_character': 511, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3447166', 'title': 'Little Shop of Horrors (film)', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 131, 'bleu_score': 0.8914703664390791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13870780220953977250}, 'section': 'Section::::Cast.\n'}]}]