Question: Elmer Wayne Henley Jr. was convicted in 1974 for his role in a series of murders in Houston, Texas, between 1970 and 1973 in which a minimum of 28 teenage boys were abducted, tortured, raped and murdered by Dean Corll, whose  crimes became known as what?
{'answer': 'Houston Mass Murders', 'supporting_facts': [['Elmer Wayne Henley', 0], ['Elmer Wayne Henley', 1], ['Dean Corll', 1]]}