Cowboy turns back to wave out of the corral at a rodeo.
A bull rider is preparing to perform in front of a crowd
A cowboy isn't necessarily a bull rider.
exists e1 p1 x1 x2 x3.(n_corral(x2) & ne_nam_cowboy(x1) & of(e1,x2) & at(x2,x3) & n_rodeo(x3) & r_out(e1) & exists s1 x4.(to(s1,x4) & n_wave(x4) & Theme(s1,x1) & a_back(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_turn(e1))
exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 x3 x4.(in(e2,x3) & of(x3,x4) & n_crowd(x4) & n_front(x3) & Actor(e2,x1) & v_perform(e2)) & n_rider(x1) & of(x1,x2) & n_bull(x2))