sentence1: Camm decided that both engines would be used : the Tempest Mk 5 had fitted with the Napier Sabre , while the Tempest Mk 2 was the Bristol Centaurus .
sentence2: Camm decided that both machines would be used : the Tempest Mk 5 had fitted with Napier Sabre , while the Tempest Mk 2 was the Bristol Centaurus .