A family is sitting in a hut.
A father and his two sons are reading a book together.
Just because it is a family, doesn't mean it is a father and two sons and just because they are in a hut, doesn't mean they are reading.
exists e1 x1 x2.(in(e1,x2) & n_hut(x2) & Actor(e1,x1) & v_sit(e1) & n_family(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_read(e1) & r_together(x4) & n_book(x4) & subset_of(x3,x1) & n_son(x3) & card_eq_2(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_father(x2))