A couple that is about to kiss.
a boy eats tacos
Boy indicates single person while couple indicates two person, and one can't eat tacos and kiss.
exists p1 s1 x1 x2.(a_topic(x1) & Topic(s1,p1) & Actor(s1,x2) & a_about(s1) & exists e1.(Actor(e1,x2) & v_kiss(e1)) & (x1 = x2) & n_couple(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_taco(x2) & n_boy(x1))