Assertion: peregrine falcon | /r/HasProperty | the rolls-royce exe
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text: In August 1940 Ernest Hives, head of the Rolls-Royce aero engine division, wrote to Air Chief Marshal Wilfrid Freeman expressing his wish to stop work on the Peregrine, Vulture and another engine development project, the Rolls-Royce Exe, to concentrate efforts on the Merlin and Griffon but Freeman disagreed and stated that Peregrine production should continue.