/usr/include/ is in libkf5activitiesstats-dev 5.44.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/
/usr/include/KF5/KActivitiesStats/
/usr/include/KF5/KActivitiesStats/KActivities/
/usr/include/KF5/KActivitiesStats/KActivities/Stats/
/usr/include/KF5/KActivitiesStats/KActivities/Stats/Cleaning
/usr/include/KF5/KActivitiesStats/KActivities/Stats/Query
/usr/include/KF5/KActivitiesStats/KActivities/Stats/ResultModel
/usr/include/KF5/KActivitiesStats/KActivities/Stats/ResultSet
/usr/include/KF5/KActivitiesStats/KActivities/Stats/ResultWatcher
/usr/include/KF5/KActivitiesStats/KActivities/Stats/Terms
/usr/include/KF5/KActivitiesStats/kactivitiesstats/
/usr/include/KF5/KActivitiesStats/kactivitiesstats/cleaning.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/kactivitiesstats_export.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/query.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/resultmodel.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/resultset.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/resultwatcher.h
/usr/include/KF5/KActivitiesStats/kactivitiesstats/terms.h
/usr/include/KF5/kactivitiesstats_version.h