CREATE TABLE table_6925 ("Office" TEXT, "Democratic ticket" TEXT, "Republican ticket" TEXT, "Conservative ticket" TEXT, "Liberal ticket" TEXT, "Free Libertarian ticket" TEXT, "Socialist Labor ticket" TEXT)

The Liberal Ticket listed which candidate when Jack A. Martin was listed on the Free Libertarian Ticket?
SELECT "Liberal ticket" FROM table_6925 WHERE "Free Libertarian ticket" = 'jack a. martin'
SELECT "Liberal ticket" FROM "table_6925" WHERE "Free Libertarian ticket" = 'jack a. martin'