A boy in an orange shirt grinds a skateboard ramp.
A boy in an orange shirt is riding a skateboard
A boy in an orange shirt riding a skateboard is part of his description while in skateboard ramp.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_grind(e1) & n_ramp(x4) & of(x4,x5) & n_skateboard(x5) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_boy(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x4) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_boy(x1))