a dune buggy racer in the desert.
The racecar is at Talladega
Talladega is not in the desert.  The dune buggy cannot be in both the desert and in Talladega.
exists s1 x1 x2 x3.(n_desert(x3) & a_topic(x1) & in(x1,x3) & n_racer(x1) & of(x1,x2) & n_buggy(x2) & a_dune(s1) & Theme(s1,x1))
exists p1 x1 x2.(ne_geo_talladega(x2) & n_racecar(x1) & at(x1,x2))