Man walks along a river bed approaching a bridge.
The man is on the road to ruin.
A river bed is not the road to ruin.
exists e2 e1 x1 x2 x3 x4 x5.(along(e1,x2) & Theme(e2,x5) & Actor(e2,x4) & v_approach(e2) & n_bridge(x5) & (x2 = x4) & n_bed(x2) & of(x2,x3) & n_river(x3) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists p1 x1 x2.(n_road(x2) & n_man(x1) & exists x3.(on(x1,x2) & to(x2,x3) & n_ruin(x3)))