Question: who played nancy mcnally on the west wing
[{'answer': 'Anna Deavere Smith', 'provenance': [{'wikipedia_id': '1878026', 'title': 'Anna Deavere Smith', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]