A woman with white hair chisels at an uncompleted sculpture.
A women is chiseling.
You need to chisel in order to complete a sculpture.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & at(x1,x4) & n_sculpture(x4) & a_uncompleted(s2) & Theme(s2,x4) & with(x1,x2) & n_chisel(x2) & of(x2,x3) & n_hair(x3) & a_white(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_chisel(e1) & n_woman(x1))