Person on four wheeler does a midair stunt.
Someone on four wheeler does a midair stunt.
A person is someone.
exists e1 x1 x2 x3 x4.(ne_per_person(x1) & on(e1,x4) & n_wheeler(x4) & card_eq_4(x4) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_stunt(x2) & of(x2,x3) & n_midair(x3))
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_stunt(x3) & of(x3,x4) & n_midair(x4) & on(x1,x2) & n_wheeler(x2) & card_eq_4(x2) & n_person(x1))