A man holding a fish on a boat.
A man is holding a fish.
A man is holding a fish is rephrasing of a man holding a fish.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_boat(x4) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_fish(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_fish(x2) & n_man(x1))