A skateboarder wearing a red plaid shirt does a trick off of a concrete ramp.
a skateboarder is being filmed for a video
Just because the skateboarder is doing tricks doesn't mean he is being filmed for a video.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(of(e2,x6) & n_ramp(x6) & a_concrete(s2) & Theme(s2,x6) & r_off(e2) & Theme(e2,x5) & Actor(e2,x1) & v_do(e2) & n_trick(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shirt(x3) & of(x3,x4) & n_plaid(x4) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_skateboarder(x1))
exists e1 x1 x2.(for(e1,x2) & n_video(x2) & Theme(e1,x1) & v_film(e1) & n_skateboarder(x1))