CREATE TABLE table_24624 ("Round" FLOAT, "Date" CLOB, "City and venue" CLOB, "Winner" CLOB, "Runner-up" CLOB, "3rd placed" CLOB, "4th placed" CLOB, "Results" CLOB)

Who placed fourth when the winner was Greg Hancock?
SELECT "4th placed" FROM table_24624 WHERE "Winner" = 'Greg Hancock'
SELECT "4th placed" FROM "table_24624" WHERE "Winner" = 'Greg Hancock'