question: knife:sharp:cut
choices.label: A B C D
choices.text: window glass:transparent:windshield light:bright:illuminate bed:soft:comfortable insulation cup:heat insulation:hold water
explanation: the attribute of "knife" is "sharp". "knife" can be used to "cut". the property of "window glass" is "transparent". "window glass" can be used to "windshield". the attribute of "lamp" is "bright". "lamp" can be used to "illuminate". "comfortable" is a modifier of "bed", and the function of "bed" is not "softness". the "insulation cup" can be used to "hold water", not used for "heat insulation".
relation: sharp knife R3.1
relation: knife cut R3.3
relation: transparent window glass R3.1
relation: bright light R3.1
relation: light illuminate R3.3
relation: comfortable bed R4.3