Question: What is the latest opened year of the team in glasgow, scotland?
SQL: SELECT MAX("Opened") FROM "2-160994-4" WHERE "City" = 'glasgow, scotland';

Question: What is the average opened year of mini estadi stadium in barcelona, spain?
SQL: SELECT AVG("Opened") FROM "2-160994-4" WHERE "City" = 'barcelona, spain' AND "Stadium" = 'mini estadi';