Two race cars speed around a track.
About a half dozen cars are racing down the road.
Two cars are not about a half dozen.
exists e1 x1 x2 x3 x4.(around(e1,x4) & n_track(x4) & Theme(e1,x3) & Actor(e1,x1) & v_speed(e1) & n_thing(x3) & n_car(x1) & of(x1,x2) & n_race(x2) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(n_road(x4) & down(e1,x4) & Actor(e1,x1) & v_race(e1) & r_about(x1) & n_car(x1) & of(x1,x3) & n_dozen(x3) & of(x1,x2) & n_half(x2))