A boy does a cartwheel on a rock cliff.
A boy plays inside.
A boy is playing inside and rock cliff is done outside.
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_cliff(x3) & of(x3,x4) & n_rock(x4) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_cartwheel(x2) & n_boy(x1))
exists e1 s1 x1.(a_inside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_boy(x1))