a shirtless boy jumps onto the couch.
A boy jumps onto the couch.
If someone jumps it is usually onto something. It is a rephrase of "a shirtless boy jumps onto the couch."
exists s1 x1 x2 x3.(n_couch(x3) & a_topic(x1) & onto(x1,x3) & n_jump(x1) & of(x1,x2) & n_boy(x2) & a_shirtless(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_couch(x2) & onto(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_boy(x1))