a white and brown dog stands on a stone wall at night whilst snow is falling.
The dog is black and gray.
A dog cannot be both white and brown, and black and gray.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(at(e1,x4) & Actor(e2,x7) & v_fall(e2) & (x4 = x7) & n_snow(x4) & of(x4,x6) & n_whilst(x6) & of(x4,x5) & n_night(x5) & on(e1,x2) & n_wall(x2) & of(x2,x3) & n_stone(x3) & Actor(e1,x1) & v_stand(e1) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_white(s1) & Theme(s1,x1))
exists s1 s2 x1.(n_dog(x1) & Theme(s2,x1) & a_gray(s2) & Theme(s1,x1) & a_black(s1))