An old man tying a net for fishing.
A person is sitting in a boat.
Tying a net does not imply sitting in a boat.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & for(e1,x4) & n_fishing(x4) & Theme(e1,x3) & Actor(e1,x2) & v_tie(e1) & n_net(x3) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 x1 x2.(in(e1,x2) & n_boat(x2) & Actor(e1,x1) & v_sit(e1) & n_person(x1))