/usr/ is in edubuntu-menus 0.2.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/edubuntu-menus/
/usr/share/edubuntu-menus/groups/
/usr/share/doc/edubuntu-menus/changelog.gz
/usr/share/edubuntu-menus/groups/edubuntu-basic.menu
/usr/share/edubuntu-menus/groups/edubuntu-graphics.menu
/usr/share/edubuntu-menus/groups/edubuntu-internet.menu
/usr/share/edubuntu-menus/groups/edubuntu-math.menu
/usr/share/edubuntu-menus/groups/edubuntu-multimedia.menu
/usr/share/edubuntu-menus/groups/edubuntu-office.menu
/usr/share/edubuntu-menus/groups/edubuntu-science.menu
/usr/share/edubuntu-menus/groups/edubuntu-writing.menu
/usr/share/edubuntu-menus/menus/
/usr/share/edubuntu-menus/menus/applications.menu
/usr/share/edubuntu-menus/shipped-groups
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/edubuntu-menus
/usr/share/doc/
/usr/share/doc/edubuntu-menus/
/usr/share/doc/edubuntu-menus/README
/usr/share/doc/edubuntu-menus/copyright