Question: who does all the voices on the simpsons
[{'answer': 'Dan Castellaneta', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 166, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Julie Kavner', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 184, 'end_paragraph_id': 1, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Nancy Cartwright', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 198, 'end_paragraph_id': 1, 'end_character': 214, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Yeardley Smith', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 216, 'end_paragraph_id': 1, 'end_character': 230, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Hank Azaria', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 232, 'end_paragraph_id': 1, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Harry Shearer', 'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 248, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2956866', 'title': 'List of The Simpsons cast members', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 750, 'bleu_score': 0.70625736579744, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9911990250736661980}, 'section': 'Section::::Abstract.'}]}]