question: opera house:library
choices.label: A B C D
choices.text: control tower:flying runway clothes:trousers vegetable basket:leather box water cup:pool
explanation: "opera house" and the "library" have different roles, but they are all social public resources the "control tower" and "flying runway" do not have the same functional attributes. the function of the "control tower" is to guide the landing area of ​​the aircraft, and not let them collide. the "flying runway" provides a place for the aircraft to take off or land. "clothes" includes "trousers", which is a type of "clothes" the "vegetable basket" and "leather box" have different functions, but the function is to hold things. the "water cup" and "pool" have the same function as the object, and the function is to hold water.
relation: opera house library R2.6
relation: clothes trousers R2.2
relation: vegetable basket leather box R2.6