A brown dog walking on a frozen lake carrying a stick.
This dog is not white with black spots.
The dog is brown so it is not white with black spots
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x3) & Theme(e1,x5) & Actor(e1,x4) & v_carry(e1) & n_stick(x5) & (x3 = x4) & n_lake(x3) & a_frozen(s2) & Theme(s2,x3) & n_walking(x1) & of(x1,x2) & n_dog(x2) & a_brown(s1) & Theme(s1,x1))
exists x1.(n_dog(x1) & -exists s1 s2 x2.(with(s1,x2) & n_spot(x2) & a_black(s2) & Theme(s2,x2) & Theme(s1,x1) & a_white(s1)))