A boy is sitting by the water trying to feed a swan.
A boy is by the water.
sitting by the water is a boy
exists e1 e2 p1 x1 x2 x3.(n_water(x2) & by(e1,x2) & Topic(e2,p1) & Actor(e2,x3) & v_try(e2) & exists e3 x4.(Theme(e3,x4) & Actor(e3,x3) & v_feed(e3) & n_swan(x4)) & (x2 = x3) & Actor(e1,x1) & v_sit(e1) & n_boy(x1))
exists p1 x1 x2.(n_water(x2) & by(x1,x2) & n_boy(x1))