CREATE TABLE table_43715 ("Date" CLOB, "Venue" CLOB, "Opponents" CLOB, "Score" CLOB, "Comp" CLOB)

Who were the opposing team when playing in the Portugal venue?
SELECT "Opponents" FROM table_43715 WHERE "Venue" = 'portugal'
SELECT "Opponents" FROM "table_43715" WHERE "Venue" = 'portugal'