This dirt biker is enjoying the race at the racetrack in Atlanta.
The dirt biker is a girl.
Dirt biker may not necessarily be a girl
exists e1 x1 x2 x3 x4 x5.(ne_geo_atlanta(x5) & n_racetrack(x4) & n_race(x3) & n_biker(x1) & of(x1,x2) & n_dirt(x2) & Theme(e1,x3) & Actor(e1,x1) & v_enjoy(e1) & at(x3,x4) & in(x4,x5))
exists p1 x1 x2.(n_biker(x1) & of(x1,x2) & n_dirt(x2) & exists x3.((x1 = x3) & n_girl(x3)))