Question: what film did charlize theron win an oscar for
[{'answer': 'Monster', 'provenance': [{'wikipedia_id': '5132', 'title': 'Charlize Theron', 'start_paragraph_id': 2, 'start_character': 291, 'end_paragraph_id': 2, 'end_character': 298, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5132', 'title': 'Charlize Theron', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 913, 'bleu_score': 0.938734579765445, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17860588297151193788}, 'section': 'Section::::Abstract.'}]}]