A group of soccer players gathered on a soccer field.
the playeers are men
Not all group of soccer players are men
exists e1 x1 x2 x3 x4 x5.(on(e1,x4) & n_field(x4) & of(x4,x5) & n_soccer(x5) & Actor(e1,x1) & v_gather(e1) & of(x1,x2) & n_player(x2) & of(x2,x3) & n_soccer(x3) & n_group(x1))
exists p1 x1.(n_playeer(x1) & exists x2.((x1 = x2) & n_man(x2)))