Question: who plays claire underwood's mom on house of cards
[{'answer': 'Ellen Burstyn', 'provenance': [{'wikipedia_id': '40039520', 'title': 'Claire Underwood', 'start_paragraph_id': 5, 'start_character': 564, 'end_paragraph_id': 5, 'end_character': 577, 'bleu_score': 1.0, 'section': 'Section::::Character overview.\n'}]}, {'provenance': [{'wikipedia_id': '40039520', 'title': 'Claire Underwood', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 645, 'bleu_score': 0.9813933169956551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9560041314952417578}, 'section': 'Section::::Character overview.\n'}]}]