A child and woman exchange glances.
the child was happy
The child may or may not be happy.
exists s1 x1 x2 x3 x4.(a_topic(s1) & n_glance(x2) & of(x2,x4) & n_exchange(x4) & of(x2,x3) & n_woman(x3) & n_child(x1) & subset_of(x2,s1) & subset_of(x1,s1))
exists s1 x1.(n_child(x1) & Theme(s1,x1) & a_happy(s1))