A man performing a skateboard jump off the top of a ramp.
A man is using a skateboard ramp to perform jumps.
If a skateboarder wants to perform jumps, he would have to be at the top of a ramp to jump.
exists e1 x1 x2 x3 x4 x5 x6.(n_top(x5) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & off(x3,x5) & of(x5,x6) & n_ramp(x6) & n_jump(x3) & of(x3,x4) & n_skateboard(x4) & (x1 = x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x1) & v_perform(e2) & n_jump(x4)) & n_ramp(x2) & of(x2,x3) & n_skateboard(x3) & n_man(x1))