The man is wearing a white shirt and sunglasses.
A man riding a horse.
One can not be wearing white shirt and riding a horse simultaneously.
exists e1 s1 x1 x2 x3 x4.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & subset_of(x4,x2) & n_sunglass(x4) & subset_of(x3,x2) & n_shirt(x3) & a_white(s1) & Theme(s1,x3))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_man(x1))