A woman is standing in the street with a baby in a sling.
There is an infant
A baby is also an infant.
exists e1 x1 x2 x3 x4.(n_street(x2) & in(e1,x4) & n_sling(x4) & with(e1,x3) & n_baby(x3) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))
exists p1 x1 x2.((x1 = x2) & n_infant(x2))