Servers sitting at a table waiting.
The zombies are coming for dinner.
The subjects cannot be waiting for dinner and coming to dinner.
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & n_waiting(x3) & of(x3,x4) & n_table(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_server(x1))
exists e1 x1 x2.(n_zombie(x1) & for(e1,x2) & n_dinner(x2) & Actor(e1,x1) & v_come(e1))