Question: who plays penny on the big bang theory
[{'answer': 'Kaley Christine Cuoco', 'provenance': [{'wikipedia_id': '876916', 'title': 'Kaley Cuoco', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '876916', 'title': 'Kaley Cuoco', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 793, 'bleu_score': 0.8587792920630131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4084167236949454725}, 'section': 'Section::::Abstract.'}]}]