Several football players in a stadium
Football players practicing in a stadium.
Just because several football players in a stadium does not mean that they practicing in a stadium.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_stadium(x3) & n_player(x1) & of(x1,x2) & n_football(x2) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_stadium(x4) & Actor(e1,x3) & v_practice(e1) & (x1 = x3) & n_player(x1) & of(x1,x2) & n_football(x2))