Large brown dog walks up a blue staircase.
A small brown dog is sleeping at the bottom of the stairs.
Something cannot be both small and large. One cannot be sleeping at the bottom of the stairs and walk up the stairs at the same time.
exists e1 s1 s2 s3 s4 x1 x2.(a_up(s4) & Manner(e1,s4) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_staircase(x2) & a_blue(s3) & Theme(s3,x2) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2 x3.(n_stair(x3) & n_bottom(x2) & at(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_sleep(e1) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_small(s1) & Theme(s1,x1))