A boy in jeans and a black shirt skating down a stair rail.
The boy is not a talented skater.
JUST BECAUSE THE BOY IS SKATING DOWN A STAIR RAIL DOES NOT MEAN HE IS A TALENTED SKATER.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(a_topic(s1) & subset_of(x3,s1) & a_down(s3) & Manner(e1,s3) & Theme(e1,x5) & Actor(e1,x4) & v_skate(e1) & n_rail(x5) & of(x5,x6) & n_stair(x6) & (x3 = x4) & n_shirt(x3) & a_black(s2) & Theme(s2,x3) & subset_of(x1,s1) & in(x1,x2) & n_jeans(x2) & n_boy(x1))
exists x1.(n_boy(x1) & -exists p1 s1 x2.((x1 = x2) & n_skater(x2) & a_talented(s1) & Theme(s1,x2)))