A canal with a boat sitting in it and people walking and sitting on the sidewalk
The boat is on top of a truck.
If a boat is in a canal it is not on top of a truck.
exists e3 e2 e1 x1 x2 x3 x4 x5.(n_sidewalk(x5) & on(e3,x5) & Actor(e3,x4) & v_sit(e3) & n_people(x4) & Actor(e2,x3) & v_walk(e2) & n_people(x3) & in(e1,x1) & n_thing(x1) & Actor(e1,x1) & v_sit(e1) & with(x1,x2) & n_boat(x2) & n_canal(x1))
exists p1 x1.(n_boat(x1) & exists x2 x3.(on(x1,x2) & of(x2,x3) & n_truck(x3) & n_top(x2)))