Several football players in a stadium
Football players at the beach.
Stadiums are not usually at the beach.
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 x1 x2 x3.(n_beach(x3) & a_topic(x1) & at(x1,x3) & n_player(x1) & of(x1,x2) & n_football(x2))