The young child with red-hair bounced on the trampoline.
A young child is playing with her friends.
A young child  jumping on a trampoline does not imply that thew child is playing with her friends and the young child need not be a girl child.
exists e1 s1 x1 x2 x3.(n_trampoline(x3) & n_child(x1) & a_young(s1) & Theme(s1,x1) & on(e1,x3) & Actor(e1,x1) & v_bounce(e1) & with(x1,x2) & n_red-hair(x2))
exists e1 s1 x1 x2.(with(e1,x2) & n_friend(x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_play(e1) & n_child(x1) & a_young(s1) & Theme(s1,x1))