Question: who does the voice of brain in pinky and the brain
[{'answer': 'Maurice LaMarche', 'provenance': [{'wikipedia_id': '21684014', 'title': 'Pinky and the Brain', 'start_paragraph_id': 10, 'start_character': 21, 'end_paragraph_id': 10, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Characters.:The Brain.\n'}]}, {'provenance': [{'wikipedia_id': '21684014', 'title': 'Pinky and the Brain', 'start_paragraph_id': 35, 'start_character': 0, 'end_paragraph_id': 35, 'end_character': 576, 'bleu_score': 0.7777526895072641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14844895074923251430}, 'section': 'Section::::Production.:Voice actors.\n'}]}]