A group of people are at a party
A group of people are crying at a funeral.
The group can't be at a party and at a funeral at the same time.
exists p1 x1 x2.(exists x3.(at(x1,x3) & n_party(x3)) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_funeral(x3) & Actor(e1,x1) & v_cry(e1) & of(x1,x2) & n_people(x2) & n_group(x1))