The skateboarder is leaping over a green barrel.
A boy is riding his bike though snow.
A skateboarder can't be riding his bike.
exists e1 s1 x1 x2.(n_skateboarder(x1) & over(e1,x2) & n_barrel(x2) & a_green(s1) & Theme(s1,x2) & Actor(e1,x1) & v_leap(e1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & though(x2,x3) & n_snow(x3) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_boy(x1))