A group of men play field hockey.
A group of men in the field hockey championship.
Just because, a group of men are playing field hockey, does not imply that the men are in the hockey championship.
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_hockey(x3) & of(x3,x4) & n_field(x4) & of(x1,x2) & n_man(x2) & n_group(x1))
exists x1 x2 x3 x4 x5.(n_championship(x3) & of(x3,x5) & n_hockey(x5) & of(x3,x4) & n_field(x4) & a_topic(x1) & of(x1,x2) & in(x2,x3) & n_man(x2) & n_group(x1))