Question: who played clair huxtable on the cosby show
[{'answer': 'Phylicia Rashad', 'provenance': [{'wikipedia_id': '622498', 'title': 'Phylicia Rashad', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '622498', 'title': 'Phylicia Rashad', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 0.674587597103762, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9438642229996248604}, 'section': 'Section::::Abstract.'}]}]