Question: who does the voice of courage the cowardly dog
[{'answer': 'Marty Grabstein', 'provenance': [{'wikipedia_id': '310675', 'title': 'Courage the Cowardly Dog', 'start_paragraph_id': 4, 'start_character': 44, 'end_paragraph_id': 4, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}, {'provenance': [{'wikipedia_id': '310675', 'title': 'Courage the Cowardly Dog', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 650, 'bleu_score': 0.804046322714547, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12055898143397870512}, 'section': 'Section::::Premise.\n'}]}]