A person is flying through the air attached to a board with a parachute.
The person has both feet on the ground.
The person cannot be on the ground while flying.
exists e1 e2 x1 x2 x3 x4 x5.(n_air(x2) & through(e1,x2) & with(e2,x5) & n_parachute(x5) & to(e2,x4) & n_board(x4) & Theme(e2,x3) & v_attach(e2) & (x2 = x3) & Actor(e1,x1) & v_fly(e1) & n_person(x1))
exists e1 x1 x2 x3.(n_ground(x3) & n_foot(x2) & n_person(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1))