Question: who starred in the movie friends with benefits
[{'answer': 'Justin Timberlake', 'provenance': [{'wikipedia_id': '27694404', 'title': 'Friends with Benefits (film)', 'start_paragraph_id': 1, 'start_character': 99, 'end_paragraph_id': 1, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Mila Kunis', 'provenance': [{'wikipedia_id': '27694404', 'title': 'Friends with Benefits (film)', 'start_paragraph_id': 1, 'start_character': 121, 'end_paragraph_id': 1, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27694404', 'title': 'Friends with Benefits (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 590, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14785929854704364490}, 'section': 'Section::::Abstract.'}]}]