Blond-haired couple posing for picture.
The couple is at a wedding
Not all pictures are at a wedding.
exists e1 s1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_picture(x3) & Actor(e1,x2) & v_pose(e1) & (x1 = x2) & n_couple(x1) & a_blond-haired(s1) & Theme(s1,x1))
exists p1 x1.(n_couple(x1) & exists x2.(at(x1,x2) & n_wedding(x2)))