A man and a woman are talking in a restaurant.
The couple chat waiting to be served.
Not very man and a woman that are talking are couple.
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_restaurant(x4) & Actor(e1,x1) & v_talk(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 p1 x1 x2 x3.(n_chat(x1) & of(x1,x2) & n_couple(x2) & a_topic(x1) & Topic(e1,p1) & Actor(e1,x3) & v_wait(e1) & exists e2.(Theme(e2,x3) & v_serve(e2)) & (x1 = x3))