Question: Who is the Opponent playing at 20:00 GMT at Camp Nou?
SQL: SELECT "Opponent" FROM "2-12200756-16" WHERE "Time" = '20:00 GMT' AND "Ground" = 'Camp Nou';

Question: What time was the match played with a score of 3-2?
SQL: SELECT "Time" FROM "2-12200756-16" WHERE "Score" = '3-2';

Question: On which ground did the team play Aston Villa?
SQL: SELECT "Ground" FROM "2-12200756-16" WHERE "Opponent" = 'Aston Villa';

Question: What kind of competition was it at San Siro at 18:30 GMT?
SQL: SELECT "Competition" FROM "2-12200756-16" WHERE "Ground" = 'San Siro' AND "Time" = '18:30 GMT';