A young girl balances herself on a concrete retaining wall.
The girl plays on the wall.
Balances herself implies plays.
exists e2 e1 s1 x1 x2 x3.(on(e1,x2) & n_wall(x2) & Actor(e2,x2) & v_retain(e2) & of(x2,x3) & n_concrete(x3) & Theme(e1,x2) & Actor(e1,x1) & v_balance(e1) & n_female(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_wall(x2) & n_girl(x1) & on(e1,x2) & Actor(e1,x1) & v_play(e1))