Two men leaning on some railing at water side.
Two men leaning on some railing to watch the boats.
The two men leaning on the railing could be watching something other than boats. They could be watching anything. There may not even be boats where they are.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & n_side(x4) & of(x4,x5) & n_water(x5) & on(e1,x3) & n_railing(x3) & Actor(e1,x2) & v_lean(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 e2 p1 x1 x2 x3 x4.(n_boat(x4) & a_topic(x1) & for(e1,e2) & Topic(e2,p1) & Actor(e2,x2) & v_rail(e2) & exists e3.(Theme(e3,x4) & Actor(e3,x2) & v_watch(e3)) & on(e1,x3) & n_thing(x3) & Actor(e1,x2) & v_lean(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))