A skateboarder is doing a trick on the pavement.
a skateboarder is outside
The skateboarder is on the pavement so he must be outside.
exists e1 x1 x2 x3.(n_pavement(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x3) & n_trick(x2) & n_skateboarder(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_skateboarder(x1))