A woman is sitting on the sidewalk, sketching an image with chalk.
A vandal is defacing public property with chalk paintings.
Not every woman is a vandal. Just because she is sketching with chalk, doesn't mean she is defacing public property.
exists e1 e2 x1 x2 x3 x4.(n_sidewalk(x2) & for(e1,e2) & with(e2,x4) & n_chalk(x4) & Theme(e2,x3) & Actor(e2,x1) & v_sketch(e2) & n_image(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_deface(e1) & with(x2,x3) & n_painting(x3) & of(x3,x4) & n_chalk(x4) & n_property(x2) & a_public(s1) & Theme(s1,x2) & n_vandal(x1))