An umpire marking a base.
A umpire Making a game changing call
An umpire could do something other than be making a game changing call.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_mark(e1) & n_base(x3) & (x1 = x2) & n_umpire(x1))
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_make(e2) & n_call(x3) & Actor(e1,x3) & v_change(e1) & of(x3,x4) & n_game(x4) & (x1 = x2) & n_umpire(x1))