Question: who played the maid in guess whos coming to dinner
[{'answer': 'Isabel Sanford', 'provenance': [{'wikipedia_id': '70647', 'title': "Guess Who's Coming to Dinner", 'start_paragraph_id': 24, 'start_character': 12, 'end_paragraph_id': 24, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]