    Sentence 1: Perhaps the .térrorists: stabbed  the flight attendants tq get a cockpit key, to.  force ane of them to open the cockpit door,  lor to lure the captain ‘or first.officer out of |  ithe cockpit:    Sentence '2:'1t as not. been proven. that he  térrotists. stabbed the. flight attertdants.or.  that.théey-had any nefartous intent.