a boy in a purple shirt is doing a skateboard stunt on a wooden ramp beside a white building.
A boy is trying to perfect a skateboard trick his brother showed him.
Someone other than his brother could have showed the trick to the skateboarder. The skateboarder could just be having fun with no intention of trying to perfect this trick.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(beside(e1,x6) & n_building(x6) & a_white(s3) & Theme(s3,x6) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & on(x3,x5) & n_ramp(x5) & a_wooden(s2) & Theme(s2,x5) & n_stunt(x3) & of(x3,x4) & n_skateboard(x4) & in(x1,x2) & n_shirt(x2) & a_purple(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 p1 x1 x4.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 p2 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_perfect(e2) & exists e3 x1.(Theme(e3,x1) & Actor(e3,x4) & v_show(e3) & n_male(x1)) & that(x2,p2) & n_trick(x2) & of(x2,x3) & n_skateboard(x3)) & n_brother(x4) & of(x4,x1) & n_male(x1) & n_boy(x1))