People on a bridge look at the water.
People crossing a bridge stop to look at the water.
Just because people on the bridge look at the water it does not mean they stop crossing the bridge.
exists x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & on(x1,x2) & at(x2,x4) & n_look(x2) & of(x2,x3) & n_bridge(x3) & n_people(x1))
exists e1 p1 x1 x2 x3 x4 x5 x6.(n_water(x6) & a_topic(x1) & Topic(e1,p1) & exists e2.(at(e2,x6) & Actor(e2,x2) & v_look(e2)) & Theme(e1,x4) & Actor(e1,x3) & v_cross(e1) & n_stop(x4) & of(x4,x5) & n_bridge(x5) & (x1 = x3) & (x1 = x2) & n_people(x1))