A skater is jumping in the air over some stairs at night.
A skater is jumping over some stairs in the  local skate park.
Just because the skater is jumping in the air doesn't imply he is at a local skate park.
exists e1 x1 x2 x3 x4.(n_air(x2) & at(e1,x4) & n_night(x4) & over(e1,x3) & n_stair(x3) & in(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_skater(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_park(x3) & of(x3,x4) & n_skate(x4) & a_local(s2) & Theme(s2,x3) & in(e1,x3) & a_over(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_stair(x2) & n_skater(x1))