A man dressed in red is riding a beautiful white horse in some sort of exhibition or competition.
A man is riding in the wilderness alone
If the man is riding in an exhibition or competition, the man is not riding alone in the wilderness.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(in(e2,x5) & of(x5,x6) & (n_exhibition(x6) | n_competition(x6)) & n_sort(x5) & Theme(e2,x4) & Actor(e2,x1) & v_ride(e2) & n_horse(x4) & a_white(s2) & Theme(s2,x4) & a_beautiful(s1) & Theme(s1,x4) & in(e1,x3) & n_red(x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_wilderness(x2) & in(e1,x2) & r_alone(x2) & Actor(e1,x1) & v_ride(e1) & n_man(x1))