Question: who plays kelly in saved by the bell
[{'answer': 'Tiffani Amber Thiessen', 'provenance': [{'wikipedia_id': '29774', 'title': 'Tiffani Thiessen', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29774', 'title': 'Tiffani Thiessen', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 597, 'bleu_score': 0.774335642850386, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16571019292449160380}, 'section': 'Section::::Abstract.'}]}]