/usr/lib/perl5/Gnome2/Wnck/ is in libgnome2-wnck-perl 0.16-2build3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/perl5/Gnome2/Wnck/Application.pod
/usr/lib/perl5/Gnome2/Wnck/ClassGroup.pod
/usr/lib/perl5/Gnome2/Wnck/Install/
/usr/lib/perl5/Gnome2/Wnck/Install/Files.pm
/usr/lib/perl5/Gnome2/Wnck/Install/wnck2perl-autogen.h
/usr/lib/perl5/Gnome2/Wnck/Install/wnck2perl-version.h
/usr/lib/perl5/Gnome2/Wnck/Install/wnck2perl.h
/usr/lib/perl5/Gnome2/Wnck/Install/wnck2perl.typemap
/usr/lib/perl5/Gnome2/Wnck/Pager.pod
/usr/lib/perl5/Gnome2/Wnck/Screen.pod
/usr/lib/perl5/Gnome2/Wnck/Selector.pod
/usr/lib/perl5/Gnome2/Wnck/Tasklist.pod
/usr/lib/perl5/Gnome2/Wnck/Window.pod
/usr/lib/perl5/Gnome2/Wnck/Workspace.pod
/usr/lib/perl5/Gnome2/Wnck/index.pod
/usr/lib/perl5/Gnome2/Wnck/main.pod