Skateboarder on a ramp as seen through a chain link fence.
Skateboarder on ramp performing tricks
Skateboarder not necessarily performing tricks just because on a ramp.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(x1,x2) & through(e1,x4) & Time(x4,x6) & n_fence(x6) & n_link(x4) & of(x4,x5) & n_chain(x5) & Theme(e1,x3) & v_see(e1) & (x2 = x3) & n_ramp(x2) & n_skateboarder(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_trick(x2) & Actor(e1,x2) & v_perform(e1) & of(x2,x3) & n_ramp(x3) & n_skateboarder(x1))