A plane is taxiing next to some water
A plane is next to a river.
All water is not a river.
exists e1 x1 x2.(to(e1,x2) & n_water(x2) & r_next(e1) & Actor(e1,x1) & v_taxi(e1) & n_plane(x1))
exists s1 x1 x2.(to(s1,x2) & n_river(x2) & Theme(s1,x1) & a_next(s1) & n_plane(x1))