Question: Name the American medical doctor who was convicted in 1979 of murdering his pregnant wife and two daughters and whose story is ruminated over in a study by Janet Malcolm titled 'The Journalist and the Murderer'?
{'answer': 'Jeffrey R. MacDonald', 'supporting_facts': [['The Journalist and the Murderer', 0], ['The Journalist and the Murderer', 2], ['Jeffrey R. MacDonald', 0]]}