CREATE TABLE table_67953 ("Sydney" TEXT, "Melbourne" TEXT, "Perth" TEXT, "Adelaide" TEXT, "Gold Coast" TEXT, "Auckland" TEXT)

Name the Adelaide for Sydney of yes and Perth of yes
SELECT "Adelaide" FROM table_67953 WHERE "Sydney" = 'yes' AND "Perth" = 'yes'
SELECT "Adelaide" FROM "table_67953" WHERE "Perth" = 'yes' AND "Sydney" = 'yes'