A dog is galloping on the beach.
A dog is laying in the bed.
The dog cannot gallop. It can either be on the beach or lay in the bed, not both.
exists e1 x1 x2.(n_beach(x2) & on(e1,x2) & Actor(e1,x1) & v_gallop(e1) & n_dog(x1))
exists e1 x1 x2.(n_bed(x2) & in(e1,x2) & Actor(e1,x1) & v_lay(e1) & n_dog(x1))