Question: who played karen walker on will & grace
[{'answer': 'Megan Mullally', 'provenance': [{'wikipedia_id': '696141', 'title': 'Megan Mullally', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '696141', 'title': 'Megan Mullally', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 662, 'bleu_score': 0.7952555514960951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11395706320993538302}, 'section': 'Section::::Abstract.'}]}]