An older woman in sunglasses sits behind a man in a yellow shirt.
An old lady is not wearing sunglasses and sitting behind a man.
One is either not wearing sunglasses or is in sunglasses.
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x4) & n_shirt(x4) & a_yellow(s2) & Theme(s2,x4) & behind(e1,x3) & n_man(x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_sunglass(x2) & n_woman(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists s1 x1.(-exists e2 e1 x2 x3.(behind(e2,x3) & n_man(x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_sunglass(x2)) & n_lady(x1) & a_old(s1) & Theme(s1,x1))