A person is being pulled by watercraft across the gleaming water.
A person is pulled by a parachute
Being pulled by a watercraft does not imply that a parachute is used.
exists e2 e1 x1 x2 x3.(n_water(x3) & Actor(e2,x3) & v_gleam(e2) & Actor(e1,x2) & across(x2,x3) & n_watercraft(x2) & Theme(e1,x1) & v_pull(e1) & n_person(x1))
exists e1 x1 x2.(Actor(e1,x2) & n_parachute(x2) & Theme(e1,x1) & v_pull(e1) & n_person(x1))