The man riding a board on calm waters is silhouetted by the sunlight.
The man enjoys being on the water.
In both sentences, the man is on the water doing something.
exists e2 e1 s1 x1 x2 x3 x4 x5.(n_sunlight(x5) & n_man(x1) & Actor(e2,x5) & Theme(e2,x1) & v_silhouette(e2) & on(e1,x4) & n_waters(x4) & a_calm(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_board(x3) & (x1 = x2))
exists e1 p1 x1 x2.(n_water(x2) & n_man(x1) & exists p2.on(x1,x2) & Topic(e1,p1) & Actor(e1,x1) & v_enjoy(e1))