Parachuter in midair.
The person has a life jacket.
The parachuter wouldn't have on a life jacket.
exists s1 x1.(ne_nam_parachuter(s1) & a_topic(s1) & in(s1,x1) & n_midair(x1))
exists e1 x1 x2 x3.(n_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_jacket(x2) & of(x2,x3) & n_life(x3))