A man in medieval armor rides atop a horse.
The man is on an animal.
The man is riding on a horse.
exists e1 s1 x1 x2 x3.(atop(e1,x3) & n_horse(x3) & Actor(e1,x1) & v_ride(e1) & in(x1,x2) & n_armor(x2) & a_medieval(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(on(x1,x2) & n_animal(x2)))