/usr/share/doc/debiandoc-sgml/ is in debiandoc-sgml-doc 1.1.22.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/debiandoc-sgml-doc/README.Debian
/usr/share/doc/debiandoc-sgml-doc/TODO
/usr/share/doc/debiandoc-sgml-doc/changelog.gz
/usr/share/doc/debiandoc-sgml-doc/copyright
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.en.txt.gz
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ap-entities.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ap-xml.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-chaptsectpar.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-dds.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-inline.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-limitations.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-listexamp.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-markup.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-structure.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/ch-unsupported.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/footnotes.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/index.en.html
/usr/share/doc/debiandoc-sgml-doc/debiandoc-sgml.html/index.html
/usr/share/doc/debiandoc-sgml/debiandoc-sgml.en.txt.gz
/usr/share/doc/debiandoc-sgml/debiandoc-sgml.html