A couple surrounded by pink and white balloons.
A couple is celebrating their first anniversary.
A couple surrounded by pink and white balloons doesn't imply they are celebrating their first anniversary.
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 e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_celebrate(e1) & n_anniversary(x2) & a_first(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & n_couple(x1))