CREATE TABLE table_name_22 (start VARCHAR2, entrant VARCHAR2, engine VARCHAR2, year VARCHAR2)

What start has a ford cosworth dfx as the engine, a year later than 1981, and kraco enterprises as the entrant?
SELECT start FROM table_name_22 WHERE engine = "ford cosworth dfx" AND year > 1981 AND entrant = "kraco enterprises"
SELECT "start" FROM "table_name_22" WHERE "engine" = "ford cosworth dfx" AND "entrant" = "kraco enterprises" AND "year" > 1981