A white dog is walking through a river that runs through a rocky landscape.
A dog is sitting on a couch.
dog cannot be siting and walking simultaneously.
exists e1 e2 s1 s2 x1 x2 x3 x4.(through(e1,x2) & through(e2,x4) & n_landscape(x4) & a_rocky(s2) & Theme(s2,x4) & Actor(e2,x3) & v_run(e2) & (x2 = x3) & n_river(x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2.(on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1))