/usr/share/perl5/RDF/Query/Plan/ is in librdf-query-perl 2.910-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/RDF/Query/Plan/Aggregate.pm
/usr/share/perl5/RDF/Query/Plan/BasicGraphPattern.pm
/usr/share/perl5/RDF/Query/Plan/Clear.pm
/usr/share/perl5/RDF/Query/Plan/ComputedStatement.pm
/usr/share/perl5/RDF/Query/Plan/Constant.pm
/usr/share/perl5/RDF/Query/Plan/Construct.pm
/usr/share/perl5/RDF/Query/Plan/Copy.pm
/usr/share/perl5/RDF/Query/Plan/Distinct.pm
/usr/share/perl5/RDF/Query/Plan/Extend.pm
/usr/share/perl5/RDF/Query/Plan/Filter.pm
/usr/share/perl5/RDF/Query/Plan/Iterator.pm
/usr/share/perl5/RDF/Query/Plan/Join/
/usr/share/perl5/RDF/Query/Plan/Join.pm
/usr/share/perl5/RDF/Query/Plan/Join/NestedLoop.pm
/usr/share/perl5/RDF/Query/Plan/Join/PushDownNestedLoop.pm
/usr/share/perl5/RDF/Query/Plan/Limit.pm
/usr/share/perl5/RDF/Query/Plan/Load.pm
/usr/share/perl5/RDF/Query/Plan/Minus.pm
/usr/share/perl5/RDF/Query/Plan/Move.pm
/usr/share/perl5/RDF/Query/Plan/NamedGraph.pm
/usr/share/perl5/RDF/Query/Plan/Offset.pm
/usr/share/perl5/RDF/Query/Plan/Path.pm
/usr/share/perl5/RDF/Query/Plan/Project.pm
/usr/share/perl5/RDF/Query/Plan/Quad.pm
/usr/share/perl5/RDF/Query/Plan/Sequence.pm
/usr/share/perl5/RDF/Query/Plan/Service.pm
/usr/share/perl5/RDF/Query/Plan/Sort.pm
/usr/share/perl5/RDF/Query/Plan/SubSelect.pm
/usr/share/perl5/RDF/Query/Plan/ThresholdUnion.pm
/usr/share/perl5/RDF/Query/Plan/Triple.pm
/usr/share/perl5/RDF/Query/Plan/Union.pm
/usr/share/perl5/RDF/Query/Plan/Update.pm