A dressed-up couple dances at a wedding.
There is a couple dancing at a wedding.
if a couple dances at a wedding then a couple is dancing at a wedding.
exists s1 x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_wedding(x3) & n_dance(x1) & of(x1,x2) & n_couple(x2) & a_dressed-up(s1) & Theme(s1,x1))
exists p1 x1 x2 x3 x4.((x1 = x2) & at(x2,x4) & n_wedding(x4) & n_dancing(x2) & of(x2,x3) & n_couple(x3))