CREATE TABLE table_72064 ("Date" CLOB, "Time" CLOB, "Competition" CLOB, "Opponent" CLOB, "Ground" CLOB, "Score" CLOB)

What kind of competition was it at San Siro at 18:30 GMT?
SELECT "Competition" FROM table_72064 WHERE "Ground" = 'san siro' AND "Time" = '18:30 gmt'
SELECT "Competition" FROM "table_72064" WHERE "Ground" = 'san siro' AND "Time" = '18:30 gmt'