An intrepid cowgirl rides a mustang at the rodeo.
The cowgirl is on a horse.
an cowgirl rides the horse
exists e1 s1 x1 x2 x3.(n_rodeo(x3) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_mustang(x2) & n_cowgirl(x1) & a_intrepid(s1) & Theme(s1,x1))
exists p1 x1.(n_cowgirl(x1) & exists x2.(on(x1,x2) & n_horse(x2)))