a boy performs a stunt on a BMX bike.
The boy is dancing.
A boy can either be dancing, or performing a stunt on a bike, he can not be doing both actions as the same time.
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_bike(x3) & (x3 = x4) & ne_org_bmx(x4) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & n_boy(x1))
exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_dance(e1))