A boy in a red shirt riding a skateboard quickly down the road.
The boy was a fantastic skateboarder.
Without comparison we can not assume the boy is a fantastic skateboarder.
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_road(x5) & a_topic(x1) & in(x1,x2) & down(e1,x5) & a_quickly(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_skateboard(x4) & (x2 = x3) & n_shirt(x2) & a_red(s1) & Theme(s1,x2) & n_boy(x1))
exists p1 x1.(n_boy(x1) & exists s1 x2.((x1 = x2) & n_skateboarder(x2) & a_fantastic(s1) & Theme(s1,x2)))