Question: who played gandolf in the lord of the rings
[{'answer': 'Sir Ian McKellen', 'provenance': [{'wikipedia_id': '53221', 'title': 'Gandalf', 'start_paragraph_id': 61, 'start_character': 0, 'end_paragraph_id': 61, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Adaptations.\n'}]}, {'provenance': [{'wikipedia_id': '53221', 'title': 'Gandalf', 'start_paragraph_id': 61, 'start_character': 0, 'end_paragraph_id': 61, 'end_character': 336, 'bleu_score': 0.9036816878108531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16723614785361696670}, 'section': 'Section::::Adaptations.\n'}]}]