People under a tent at a reception.
People are outside.
The people at the reception were outside but under a tent.
exists x1 x2 x3.(a_topic(x1) & under(x1,x2) & at(x2,x3) & n_reception(x3) & n_tent(x2) & n_people(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1))