An a unhappy couple sitting at a table in a restaurant.
Some people
the people sitting in arestaurant
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & in(x3,x4) & n_restaurant(x4) & n_table(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_couple(x1) & a_unhappy(s1) & Theme(s1,x1))
exists x1.(a_topic(x1) & n_people(x1))