Another man in a gray sweatshirt also rides a horse.
An adult riding a horse on a winding trail.
A man who rides a horse is not necessarily on a winding trail.
exists e1 s1 s2 x1 x2 x3 x4.(n_man(x1) & a_also(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x2) & v_ride(e1) & n_horse(x4) & in(x2,x3) & n_sweatshirt(x3) & a_gray(s1) & Theme(s1,x3) & n_man(x2) & -(x2 = x1))
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_trail(x4) & of(x4,x5) & n_winding(x5) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_adult(x1))