Question: who has played penny on the big bang theory
[{'answer': 'Kaley Cuoco', 'provenance': [{'wikipedia_id': '21971061', 'title': 'Penny (The Big Bang Theory)', 'start_paragraph_id': 1, 'start_character': 102, 'end_paragraph_id': 1, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21971061', 'title': 'Penny (The Big Bang Theory)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1039, 'bleu_score': 0.9322685406091571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17027735841830343674}, 'section': 'Section::::Abstract.'}]}]