A woman is holding a child.
A mother holds her child.
A woman holding a child doesn't necessarily mean she is the mother.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_child(x2) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_child(x2) & of(x2,x1) & n_female(x1) & n_mother(x1))