a baby wears a Santa hat.
There is a small child in a hat.
A baby is a small child.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_hat(x2) & (x2 = x3) & ne_org_santa(x3) & n_baby(x1))
exists p1 x1 x2.(in(p1,x2) & n_hat(x2) & exists s1 x3.((x1 = x3) & n_child(x3) & a_small(s1) & Theme(s1,x3)))