A group of people outside a church at a wedding.
Some people inside a church at a wedding.
People cannot be outside and inside simultaneously.
exists x1 x2 x3 x4.(a_topic(x1) & at(x1,x4) & n_wedding(x4) & of(x1,x2) & outside(x2,x3) & n_church(x3) & n_people(x2) & n_group(x1))
exists x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_wedding(x3) & inside(x1,x2) & n_church(x2) & n_people(x1))