Highschoolers smile for the camera at a dance.
High schoolers are smiling at a football game.
There is no dance at a football game.
exists e1 x1 x2 x3.(n_camera(x2) & for(e1,x2) & at(x2,x3) & n_dance(x3) & Actor(e1,x1) & v_smile(e1) & n_highschooler(x1))
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_game(x3) & of(x3,x4) & n_football(x4) & Actor(e1,x1) & v_smile(e1) & n_schooler(x1) & (x1 = x2) & ne_nam_high(x2))