The little boy with red-hair jumps on the trampoline.
the trampoline is being jumped on
A boy jumps on the trampoline means the trampoline is being jumped on.
exists s1 s2 x1 x2 x3.(n_trampoline(x3) & n_boy(x1) & a_little(s1) & Theme(s1,x1) & a_topic(x1) & with(x1,x2) & on(x2,x3) & n_jump(x2) & a_red-hair(s2) & Theme(s2,x2))
exists e1 x1.(n_trampoline(x1) & on(e1,x1) & v_jump(e1))