_:b1214693 . _:b1214684 _:b1214683 . _:b1214683 . . _:b1214689 . _:b1214688 _:b1214687 . _:b1214681 . "Chris Mungall" . _:b1214691 . _:b1214687 . "x existence ends during or before y if and only if the time point at which x ends is before or equivalent to the time point at which y ends." . _:b1214686 . _:b1214684 . _:b1214682 . _:b1214685 . _:b1214689 . _:b1214692 _:b1214691 . "The relations here were created based on work originally by Fabian Neuhaus and David Osumi-Sutherland. The work has not yet been vetted and errors in definitions may have occurred during transcription." . _:b1214693 _:b1214692 . _:b1214694 . _:b1214685 . _:b1214684 . _:b1214683 . _:b1214694 _:b1214693 . _:b1214690 . _:b1214688 . _:b1214687 . _:b1214682 _:b1214681 . _:b1214681 . . _:b1214690 . _:b1214692 . _:b1214686 . _:b1214686 _:b1214685 . _:b1214688 . _:b1214682 . _:b1214694 . _:b1214690 _:b1214689 . "existence ends during or before" .