Several hockey players from different teams and a referee are together on the ice.
Some hockey players and a referee are on the ice together.
While there is possibly several hockey players from a different team and a referee together on the ice, at the same moment there wouldn't some hockey players and a referee together.
exists s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_ice(x7) & n_team(x5) & on(s2,x7) & Theme(s2,x1) & a_together(s2) & from(x1,x3) & subset_of(x6,x3) & n_referee(x6) & subset_of(x4,x3) & -(x4 = x5) & n_team(x4) & n_player(x1) & of(x1,x2) & n_hockey(x2) & a_several(s1) & Theme(s1,x1))
exists p1 s1 x1 x2 x3 x4 x5.(n_ice(x5) & a_together(s1) & Manner(p1,s1) & on(x1,x5) & subset_of(x4,x1) & n_referee(x4) & subset_of(x2,x1) & n_player(x2) & of(x2,x3) & n_hockey(x3))