A girl in a green bandanna and flip-flops sits on stone steps.
A girl sits on a stone outside.
If the steps are made of stone and the girl is sitting on the steps, she is obviously sitting on a stone.
exists e1 s1 x1 x2 x3 x4 x5 x6.(on(e1,x5) & n_step(x5) & of(x5,x6) & n_stone(x6) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & subset_of(x4,x2) & n_flip-flop(x4) & subset_of(x3,x2) & n_bandanna(x3) & a_green(s1) & Theme(s1,x3) & n_girl(x1))
exists e1 x1 x2 x3.(on(e1,x2) & n_outside(x2) & of(x2,x3) & n_stone(x3) & Actor(e1,x1) & v_sit(e1) & n_girl(x1))