CREATE TABLE table_22949 ("Round" FLOAT, "Date" CLOB, "City and venue" CLOB, "Winner" CLOB, "Runner-up" CLOB, "3rd placed" CLOB, "4th placed" CLOB, "Results" CLOB)

Where did Grzegorz Walasek place 4th?
SELECT "City and venue" FROM table_22949 WHERE "4th placed" = 'Grzegorz Walasek'
SELECT "City and venue" FROM "table_22949" WHERE "4th placed" = 'Grzegorz Walasek'