/usr/share/perl5/Event/ is in libevent-execflow-perl 0.64-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Event/ExecFlow/
/usr/share/perl5/Event/ExecFlow.pm
/usr/share/perl5/Event/ExecFlow/Callbacks.pm
/usr/share/perl5/Event/ExecFlow/Frontend/
/usr/share/perl5/Event/ExecFlow/Frontend.pm
/usr/share/perl5/Event/ExecFlow/Frontend/Term.pm
/usr/share/perl5/Event/ExecFlow/Job/
/usr/share/perl5/Event/ExecFlow/Job.pm
/usr/share/perl5/Event/ExecFlow/Job/Code.pm
/usr/share/perl5/Event/ExecFlow/Job/Command.pm
/usr/share/perl5/Event/ExecFlow/Job/Group.pm
/usr/share/perl5/Event/ExecFlow/Scheduler/
/usr/share/perl5/Event/ExecFlow/Scheduler.pm
/usr/share/perl5/Event/ExecFlow/Scheduler/SimpleMax.pm