/usr/include/libkdeedu/ is in libkdeedu-dev 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libkdeedu/keduvocarticle.h
/usr/include/libkdeedu/keduvocconjugation.h
/usr/include/libkdeedu/keduvoccontainer.h
/usr/include/libkdeedu/keduvocdeclension.h
/usr/include/libkdeedu/keduvocdocument.h
/usr/include/libkdeedu/keduvocexpression.h
/usr/include/libkdeedu/keduvocidentifier.h
/usr/include/libkdeedu/keduvockvtml2writer.h
/usr/include/libkdeedu/keduvocleitnerbox.h
/usr/include/libkdeedu/keduvoclesson.h
/usr/include/libkdeedu/keduvocmultiplechoice.h
/usr/include/libkdeedu/keduvocpersonalpronoun.h
/usr/include/libkdeedu/keduvoctext.h
/usr/include/libkdeedu/keduvoctranslation.h
/usr/include/libkdeedu/keduvocwordflags.h
/usr/include/libkdeedu/keduvocwordtype.h
/usr/include/libkdeedu/libkeduvocdocument_export.h
/usr/include/libkdeedu/qtmml/
/usr/include/libkdeedu/qtmml/QtMmlDocument
/usr/include/libkdeedu/qtmml/QtMmlWidget
/usr/include/libkdeedu/qtmml/qtmmlwidget.h
/usr/include/libkdeedu/sharedkvtmlfiles.h