A man on a red bike popping a wheelie.
A man is riding a red bike.
If he is on a bike, it follows that he is riding a bike.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_pop(e1) & n_wheelie(x4) & (x2 = x3) & n_bike(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))