CREATE TABLE table_67981 ("Competition" TEXT, "Venue" TEXT, "Year" FLOAT, "Category" TEXT, "Result" TEXT)

What are the competitions that occurred before 2006 in SVK Nitra?
SELECT "Competition" FROM table_67981 WHERE "Year" < '2006' AND "Venue" = 'svk nitra'
SELECT "Competition" FROM "table_67981" WHERE "Venue" = 'svk nitra' AND "Year" < '2006'