A person standing on a frozen lake.
a man is going ice fishing
He isn't necessarily ice fishing.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_lake(x3) & a_frozen(s1) & Theme(s1,x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_fishing(x2) & of(x2,x3) & n_ice(x3) & n_man(x1))