/usr/ is in libnepomukwidgets-dev 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/nepomuk2/
/usr/include/nepomuk2/filemetadataconfigwidget.h
/usr/include/nepomuk2/resourcemodel.h
/usr/include/nepomuk2/tagwidget.h
/usr/include/nepomuk2/nepomukwidgets_export.h
/usr/include/nepomuk2/filemetadatawidget.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libnepomukwidgets-dev/
/usr/share/doc/libnepomukwidgets-dev/copyright
/usr/lib/
/usr/lib/cmake/
/usr/lib/cmake/NepomukWidgets/
/usr/lib/cmake/NepomukWidgets/NepomukWidgetsConfig.cmake
/usr/lib/cmake/NepomukWidgets/NepomukWidgetsTargetsWithPrefix.cmake
/usr/lib/cmake/NepomukWidgets/NepomukWidgetsTargetsWithPrefix-debian.cmake
/usr/lib/cmake/NepomukWidgets/NepomukWidgetsConfigVersion.cmake
/usr/share/doc/libnepomukwidgets-dev/changelog.Debian.gz
/usr/lib/libnepomukwidgets.so