A male rides a skateboard in the road.
The male is riding his bicycle.
skateboard and bicycle are different things
exists e1 x1 x2 x3.(n_road(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x2) & n_male(x1))
exists e1 x1 x2.(n_bicycle(x2) & of(x2,x1) & n_male(x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1))