Several people sit by a campfire in the darkness.
A group of people are grilling on the porch.
There wouldn't be a campfire on the porch.
exists e1 s1 x1 x2 x3.(n_darkness(x3) & in(e1,x3) & by(e1,x2) & n_campfire(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_porch(x3) & on(e1,x3) & Actor(e1,x1) & v_grill(e1) & of(x1,x2) & n_people(x2) & n_group(x1))