A dark-skinned security officer smiles.
A dark-skinned security officer cries.
When one smiles it is different than when one cries.
exists e1 s1 x1 x2.(Actor(e1,x1) & v_smile(e1) & n_officer(x1) & of(x1,x2) & n_security(x2) & a_dark-skinned(s1) & Theme(s1,x1))
exists s1 x1 x2 x3.(a_topic(x1) & n_cry(x1) & of(x1,x3) & n_officer(x3) & of(x1,x2) & n_security(x2) & a_dark-skinned(s1) & Theme(s1,x1))