A woman smiling at a baby.
The baby is alone.
The woman can't be smiling at the baby if the baby is alone.
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_baby(x3) & Actor(e1,x2) & v_smile(e1) & (x1 = x2) & n_woman(x1))
exists s1 x1.(n_baby(x1) & Theme(s1,x1) & a_alone(s1))