A mother is feeding two infants.
woman had twins
Not all infants are twins.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_feed(e1) & n_infant(x2) & card_eq_2(x2) & n_mother(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_twin(x2) & n_woman(x1))