A dog walking on a wet beach.
A dog standing on wet cement.
wet beach is contradictory to wet cement
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_beach(x3) & a_wet(s1) & Theme(s1,x3) & n_walking(x1) & of(x1,x2) & n_dog(x2))
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_cement(x3) & a_wet(s1) & Theme(s1,x3) & n_standing(x1) & of(x1,x2) & n_dog(x2))