Question: who starred in the movie natural born killers
[{'answer': 'Woody Harrelson', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 112, 'end_paragraph_id': 1, 'end_character': 127, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Juliette Lewis', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 143, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Robert Downey , Jr .', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 22, 'start_character': 12, 'end_paragraph_id': 22, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Tommy Lee Jones', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 182, 'end_paragraph_id': 1, 'end_character': 197, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Tom Sizemore', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 164, 'end_paragraph_id': 1, 'end_character': 176, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Robert Downey Jr.', 'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 145, 'end_paragraph_id': 1, 'end_character': 162, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 350, 'bleu_score': 0.791779482182216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2731858954602160752}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2731858954602160752}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21180', 'title': 'Natural Born Killers', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Tom Sizemore, and Tommy Lee Jones', 'Natural Born Killers is a 1994 American satirical black comedy crime film directed by Oliver Stone and starring Woody Harrelson, Juliette Lewis, Robert Downey Jr., Tom Sizemore, and Tommy Lee Jones.', 'starring Woody Harrelson, Juliette Lewis, Robert Downey Jr., Tom Sizemore, and Tommy Lee Jones']}}]}]