A soccer game or a football game
A soccer or football game.
A soccer game is soccer.
(exists x1 x2.(a_topic(x1) & n_game(x1) & of(x1,x2) & n_soccer(x2)) | exists x3 x4.(a_topic(x3) & n_game(x3) & of(x3,x4) & n_football(x4)))
exists s1.(a_topic(s1) & (n_soccer(s1) | exists x1.(n_game(s1) & of(s1,x1) & n_football(x1))))