What is the American Labor ticket when Henry Epstein is the liberal ticket?
CREATE TABLE "1946_state_election_results" (
  "office" text,
  "republican_ticket" text,
  "democratic_ticket" text,
  "american_labor_ticket" text,
  "liberal_ticket" text,
  "communist_ticket" text
);
SELECT "american_labor_ticket" FROM "1946_state_election_results" WHERE "liberal_ticket"='henry epstein';