CREATE TABLE table_47631 ("Year" FLOAT, "Competition" TEXT, "Venue" TEXT, "Position" TEXT, "Notes" TEXT)

Which Venue has a Competition of european championships, and a Position of 7th?
SELECT "Venue" FROM table_47631 WHERE "Competition" = 'european championships' AND "Position" = '7th'
SELECT "Venue" FROM "table_47631" WHERE "Competition" = 'european championships' AND "Position" = '7th'