Question: who played bat masterson in the movie tombstone
[{'answer': 'Mason Alan Dinehart', 'provenance': [{'wikipedia_id': '39941754', 'title': 'Mason Alan Dinehart', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39941754', 'title': 'Mason Alan Dinehart', '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': 7957878265581994524}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39941754', 'title': 'Mason Alan Dinehart', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 417, 'bleu_score': 0.91198613574562, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7957878265581994524}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6523421', 'title': 'Ed Masterson', 'section': 'Section::::Western depictions.\n', 'start_paragraph_id': 13, 'end_paragraph_id': 13, 'meta': {'evidence_span': ['On April 2, 1957, the western actor Brad Johnson played Ed Masterson in the episode "The Nice Ones Always Die First" of the ABC television', "Mason Alan Dinehart is cast as Ed's brother, Bat, who took the view that his brother was unsuited to be a lawman. In the 1959 MGM film"]}}]}]