Several people sitting around a campfire at night.
The zombies are sitting around the campfire.
Someone cannot be a person and a zombie at the same time. It says several people are sitting around the campfire.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_night(x4) & around(e1,x3) & n_campfire(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_campfire(x2) & n_zombie(x1) & around(e1,x2) & Actor(e1,x1) & v_sit(e1))