The skateboarder is doing a trick off the side of a half pipe
The skateboarder is performing a trick.
Performing a trick is another way to say doing a trick.
exists e1 x1 x2 x3 x4 x5.(n_side(x3) & n_skateboarder(x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & off(x2,x3) & of(x3,x4) & n_pipe(x4) & of(x4,x5) & n_half(x5) & n_trick(x2))
exists e1 x1 x2.(n_skateboarder(x1) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_trick(x2))