Question: The Lucy Show is an American sitcom that aired on CBS from 1962–68, for the first three seasons, Vivian Vance was the co-star, Vance was an American television and theater actress and singer, best known for her role as who?
{'answer': 'Ethel Mertz', 'supporting_facts': [['The Lucy Show', 3], ['Vivian Vance', 0], ['Vivian Vance', 1]]}