Question: who did rafiki voice in the lion king
[{'answer': 'Robert Guillaume', 'provenance': [{'wikipedia_id': '624363', 'title': 'Robert Guillaume', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '624363', 'title': 'Robert Guillaume', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 734, 'bleu_score': 0.9530207117244011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7604544194452561480}, 'section': 'Section::::Abstract.'}]}]