Question: who won the oscar for best actress in 1987
[{'answer': 'Marlee Matlin', 'provenance': [{'wikipedia_id': '4008173', 'title': '59th Academy Awards', 'start_paragraph_id': 5, 'start_character': 73, 'end_paragraph_id': 5, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Winners and nominees.\n'}]}]