A young boy casting his fishing line off a pier
This boy catches a fish.
It cannot be known whether a boy casting a fishing line also catches a fish.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & off(e1,x5) & n_pier(x5) & Theme(e1,x3) & Actor(e1,x2) & v_cast(e1) & n_line(x3) & of(x3,x4) & n_fishing(x4) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_fish(x2))