/usr/include/KF5/ is in baloo-kf5-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/Baloo/
/usr/include/KF5/Baloo/Baloo/
/usr/include/KF5/Baloo/Baloo/File
/usr/include/KF5/Baloo/Baloo/FileMonitor
/usr/include/KF5/Baloo/Baloo/IndexerConfig
/usr/include/KF5/Baloo/Baloo/Query
/usr/include/KF5/Baloo/Baloo/QueryRunnable
/usr/include/KF5/Baloo/Baloo/ResultIterator
/usr/include/KF5/Baloo/Baloo/TagListJob
/usr/include/KF5/Baloo/baloo/
/usr/include/KF5/Baloo/baloo/core_export.h
/usr/include/KF5/Baloo/baloo/file.h
/usr/include/KF5/Baloo/baloo/filemonitor.h
/usr/include/KF5/Baloo/baloo/indexerconfig.h
/usr/include/KF5/Baloo/baloo/query.h
/usr/include/KF5/Baloo/baloo/queryrunnable.h
/usr/include/KF5/Baloo/baloo/resultiterator.h
/usr/include/KF5/Baloo/baloo/taglistjob.h
/usr/include/KF5/baloo_version.h