A couple on the stairs are photographing a man and woman embracing in front of a building.
The couple of photographers are happily married.
Not all couple embracing are happily married.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8.(n_stair(x2) & Theme(e2,x3) & Actor(e2,x1) & v_photograph(e2) & in(e1,x7) & of(x7,x8) & n_building(x8) & n_front(x7) & Actor(e1,x6) & v_embrace(e1) & (x3 = x6) & n_woman(x5) & n_man(x4) & subset_of(x5,x3) & subset_of(x4,x3) & on(x1,x2) & n_couple(x1))
exists e1 s1 x1 x2.(n_couple(x1) & a_happily(s1) & Manner(e1,s1) & Theme(e1,x1) & v_marry(e1) & of(x1,x2) & n_photographer(x2))