A brown dog leaps through the snow in a field.
The black dog walked through the field.
You can't have a brown dog and a black dog at the same time.
exists e1 s1 x1 x2 x3.(n_snow(x2) & through(e1,x2) & in(x2,x3) & n_field(x3) & Actor(e1,x1) & v_leap(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_field(x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1) & through(e1,x2) & Actor(e1,x1) & v_walk(e1))