A child is looking at graffiti.
A young girl sees a wall covered in illegal artwork.
Not all children are girls.  Not all graffiti is illegal artwork, some legal art pieces are classified as graffiti, and some illegal pieces of graffiti are not art.
exists e1 x1 x2.(at(e1,x2) & n_graffitus(x2) & Actor(e1,x1) & v_look(e1) & n_child(x1))
exists e2 e1 s1 s2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_see(e2) & in(e1,x4) & n_artwork(x4) & a_illegal(s2) & Theme(s2,x4) & Theme(e1,x3) & v_cover(e1) & (x2 = x3) & n_wall(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))