CREATE TABLE table_50814 ("Edition" CLOB, "Round" CLOB, "Date" CLOB, "Against" CLOB, "Surface" CLOB, "Opponent" CLOB, "Result" CLOB)

who is the opponent when norway is against?
SELECT "Opponent" FROM table_50814 WHERE "Against" = 'norway'
SELECT "Opponent" FROM "table_50814" WHERE "Against" = 'norway'