Question: who plays lady olenna in game of thrones
[{'answer': 'Dame Enid Diana Elizabeth Rigg', 'provenance': [{'wikipedia_id': '195158', 'title': 'Diana Rigg', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '195158', 'title': 'Diana Rigg', 'start_paragraph_id': 1, 'start_character': 33, 'end_paragraph_id': 1, 'end_character': 505, 'bleu_score': 0.6852121085027151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 257289494187524328}, 'section': 'Section::::Abstract.'}]}]