/usr/share/perl5/Graph/ is in libgraph-perl 1:0.96-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Graph/AdjacencyMap/
/usr/share/perl5/Graph/AdjacencyMap.pm
/usr/share/perl5/Graph/AdjacencyMap/Heavy.pm
/usr/share/perl5/Graph/AdjacencyMap/Light.pm
/usr/share/perl5/Graph/AdjacencyMap/Vertex.pm
/usr/share/perl5/Graph/AdjacencyMatrix.pm
/usr/share/perl5/Graph/Attribute.pm
/usr/share/perl5/Graph/BitMatrix.pm
/usr/share/perl5/Graph/Directed.pm
/usr/share/perl5/Graph/MSTHeapElem.pm
/usr/share/perl5/Graph/Matrix.pm
/usr/share/perl5/Graph/SPTHeapElem.pm
/usr/share/perl5/Graph/TransitiveClosure/
/usr/share/perl5/Graph/TransitiveClosure.pm
/usr/share/perl5/Graph/TransitiveClosure/Matrix.pm
/usr/share/perl5/Graph/Traversal/
/usr/share/perl5/Graph/Traversal.pm
/usr/share/perl5/Graph/Traversal/BFS.pm
/usr/share/perl5/Graph/Traversal/DFS.pm
/usr/share/perl5/Graph/Undirected.pm
/usr/share/perl5/Graph/UnionFind.pm