A man jumping a sign on his bike.
A man is doing a stunt by jumping a sign
A man jumping a sign means he is doing a stunt by jumping a sign.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_bike(x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x2) & v_jump(e1) & n_sign(x3) & (x1 = x2) & n_man(x1))
exists e1 e2 x1 x2 x3.(by(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_jump(e2) & n_sign(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_stunt(x2) & n_man(x1))