A skater is jumping in the air over some stairs at night.
A skater is outside.
JUMPING IS SAFER OUTSIDE
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 s1 x1.(Theme(s1,x1) & a_outside(s1) & n_skater(x1))