/usr/ is in libkactivities-dev 4:4.13.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/KDE/
/usr/include/KDE/KActivities/
/usr/include/KDE/KActivities/Consumer
/usr/include/KDE/KActivities/Controller
/usr/include/KDE/KActivities/Info
/usr/include/KDE/KActivities/ResourceInstance
/usr/include/KDE/KActivities/Version
/usr/include/kactivities/
/usr/include/kactivities/consumer.h
/usr/include/kactivities/controller.h
/usr/include/kactivities/info.h
/usr/include/kactivities/kactivities_export.h
/usr/include/kactivities/resourceinstance.h
/usr/include/kactivities/version.h
/usr/lib/
/usr/lib/cmake/
/usr/lib/cmake/KActivities/
/usr/lib/cmake/KActivities/KActivitiesConfig.cmake
/usr/lib/cmake/KActivities/KActivitiesConfigVersion.cmake
/usr/lib/cmake/KActivities/KActivitiesLibraryTargets-debian.cmake
/usr/lib/cmake/KActivities/KActivitiesLibraryTargets.cmake
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/libkactivities.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libkactivities-dev/
/usr/share/doc/libkactivities-dev/changelog.Debian.gz
/usr/share/doc/libkactivities-dev/copyright
/usr/lib/libkactivities.so