A person is hanging in the air from the power lines.
A person is not on the ground.
in the air and on the ground are opposites
exists e1 x1 x2 x3 x4.(n_line(x3) & of(x3,x4) & n_power(x4) & n_air(x2) & in(e1,x2) & from(x2,x3) & Actor(e1,x1) & v_hang(e1) & n_person(x1))
exists x1 x2.(n_ground(x2) & -exists p1.on(x1,x2) & n_person(x1))