Young adults wearing hats read.
young adults are not wearing hats
The young adults are wearing hats or not, and they may or may not be reading.
exists e2 e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_wear(e2) & Theme(e1,x4) & v_read(e1) & (x3 = x4) & n_hat(x3) & (x1 = x2) & n_adult(x1) & a_young(s1) & Theme(s1,x1))
exists s1 x1.(-exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_hat(x2)) & n_adult(x1) & a_young(s1) & Theme(s1,x1))