A couple surrounded by pink and white balloons.
The pink and white balloons are decorations.
pink and white balloons are naturally for decorations.
exists e1 s1 s2 x1 x2.(Actor(e1,x2) & n_balloon(x2) & a_white(s2) & Theme(s2,x2) & a_pink(s1) & Theme(s1,x2) & Theme(e1,x1) & v_surround(e1) & n_couple(x1))
exists p1 s1 x1 x2.(n_balloon(x1) & a_white(s1) & Theme(s1,x1) & of(x1,x2) & n_pink(x2) & exists x3.((x1 = x3) & n_decoration(x3)))