/usr/include/KDE/Nepomuk/Query/ is in kdelibs5-dev 4:4.14.16-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KDE/Nepomuk/Query/AndTerm
/usr/include/KDE/Nepomuk/Query/ComparisonTerm
/usr/include/KDE/Nepomuk/Query/FileQuery
/usr/include/KDE/Nepomuk/Query/GroupTerm
/usr/include/KDE/Nepomuk/Query/LiteralTerm
/usr/include/KDE/Nepomuk/Query/NegationTerm
/usr/include/KDE/Nepomuk/Query/OptionalTerm
/usr/include/KDE/Nepomuk/Query/OrTerm
/usr/include/KDE/Nepomuk/Query/Query
/usr/include/KDE/Nepomuk/Query/QueryParser
/usr/include/KDE/Nepomuk/Query/QueryServiceClient
/usr/include/KDE/Nepomuk/Query/ResourceTerm
/usr/include/KDE/Nepomuk/Query/ResourceTypeTerm
/usr/include/KDE/Nepomuk/Query/Result
/usr/include/KDE/Nepomuk/Query/SimpleTerm
/usr/include/KDE/Nepomuk/Query/StandardQuery
/usr/include/KDE/Nepomuk/Query/Term