A little boy is attempting to do a cartwheel.
The young boy is upside down.
A boy attempting a cartwheel can find himself in a variety of postures and is not necessarily upside down.
exists e1 p1 s1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_attempt(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_do(e2) & n_cartwheel(x2)) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists s1 s2 x1.(n_boy(x1) & a_young(s1) & Theme(s1,x1) & r_upside(s2) & Theme(s2,x1) & a_down(s2))