Fishermen on the beach organize their nets.
Butterfly catcher catches butterflies in his net
the individual in subject is either a fishermen or a butterfly catcher, they could not be doing both.
exists e1 x1 x2 x3.(n_net(x3) & of(x3,x2) & n_thing(x2) & n_beach(x2) & Theme(e1,x3) & Actor(e1,x1) & v_organize(e1) & on(x1,x2) & n_fisherman(x1))
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x4) & n_net(x4) & of(x4,x1) & n_male(x1) & n_butterfly(x1) & of(x1,x3) & n_catch(x3) & of(x1,x2) & n_catcher(x2) & a_butterfly(s1) & Theme(s1,x1))