A girl, sitting on a bridge staring at the water.
A girl is on a bridge
sitting on a bridge means that the girl is on a bridge
exists e1 e2 x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & for(e1,e2) & at(e2,x4) & Actor(e2,x2) & v_stare(e2) & on(e1,x3) & n_bridge(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_girl(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_bridge(x2)) & n_girl(x1))