The Liberal Ticket listed which candidate when Jack A. Martin was listed on the Free Libertarian Ticket?
CREATE TABLE table_name_21 (liberal_ticket VARCHAR, free_libertarian_ticket VARCHAR)
SELECT liberal_ticket FROM table_name_21 WHERE free_libertarian_ticket = "jack a. martin"
### Context: CREATE TABLE table_name_21 (liberal_ticket VARCHAR, free_libertarian_ticket VARCHAR) ### Question: The Liberal Ticket listed which candidate when Jack A. Martin was listed on the Free Libertarian Ticket? ### Answer: SELECT liberal_ticket FROM table_name_21 WHERE free_libertarian_ticket = "jack a. martin"