Two young boys sitting in a chair by flowers and a green rake.
They are identical twins.
Two young boys are not necessarily identical twins.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & by(e1,x4) & subset_of(x6,x4) & n_rake(x6) & a_green(s2) & Theme(s2,x6) & subset_of(x5,x4) & n_flower(x5) & in(e1,x3) & n_chair(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists p1 x1.(n_thing(x1) & exists s1 x2.((x1 = x2) & n_twin(x2) & a_identical(s1) & Theme(s1,x2)))