A woman and a man wearing sunglasses standing on the side of a busy street.
These people are spies.
While spies might wear sunglasses, not everyone who wears sunglasses are spies.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_side(x6) & a_topic(s1) & subset_of(x2,s1) & Theme(e2,x4) & Actor(e2,x3) & v_wear(e2) & on(e1,x6) & of(x6,x7) & n_street(x7) & a_busy(s2) & Theme(s2,x7) & Actor(e1,x5) & v_stand(e1) & (x4 = x5) & n_sunglass(x4) & (x2 = x3) & n_man(x2) & subset_of(x1,s1) & n_woman(x1))
exists p1 x1.(n_people(x1) & exists x2.((x1 = x2) & n_spy(x2)))