Father and son out for dinner.
Two people are eating dinner.
Father and son are the two people eating dinner.
exists s1 x1 x2 x3 x4.(ne_tim_father(x1) & a_topic(s1) & subset_of(x2,s1) & for(x3,x4) & n_dinner(x4) & out(x2,x3) & n_thing(x3) & n_son(x2) & subset_of(x1,s1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_dinner(x2) & n_people(x1) & card_eq_2(x1))