Question: who played mr roper in enter the dragon
[{'answer': 'John Saxon', 'provenance': [{'wikipedia_id': '488940', 'title': 'John Saxon', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]