EXPLANATION STRUCTURE CUP (OBJ1 OPEN-VESSEL (OBJ1) STABLE (OBJ1 LIFTABLE (OBJ1 PART-OF (OBJ1, CONCAVITY. 1) IS (OBJ1, LIGHT SA(CONCAVITY.1, CONCAVITY) PART-OF(OBJ1, HANDLE-1) IS(CONCAVITY-1, UPWARD-POINTING ISA(HANDLE-1, HANDLE PART-OF (OBJ1, BOTTOM-1 ISA(BOTTOM-1, BOTTOM) IS (BOTTOM.1, FLAT