A young boy paddles across the water in a makeshift boat.
A boy is boating in a pond.
Paddling across the water in a makeshift boat does not imply one is boating in a pond.
exists s1 x1 x2 x3 x4 x5.(n_water(x3) & a_topic(x1) & in(x1,x4) & n_boat(x4) & of(x4,x5) & n_makeshift(x5) & across(x1,x3) & n_paddle(x1) & of(x1,x2) & n_boy(x2) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(in(e1,x2) & n_pond(x2) & Actor(e1,x1) & v_boat(e1) & n_boy(x1))