Photographers taking pictures of each other.
The people are being painted by the photographers.
Being painted has nothing to do with taking pictures.
exists x1 x2 x3.(a_topic(x1) & all x4.(n_other(x4) -> exists e1.(Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & of(x3,x4))) & n_picture(x3) & (x1 = x2) & n_photographer(x1))
exists e1 x1 x2.(n_photographer(x2) & n_people(x1) & Actor(e1,x2) & Theme(e1,x1) & v_paint(e1))