A man is sitting looking at water.
A man is running in a forest.
A man cannot be sitting and running the same time.
exists e1 e2 x1 x2.(for(e1,e2) & at(e2,x2) & n_water(x2) & Actor(e2,x1) & v_look(e2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2.(in(e1,x2) & n_forest(x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))