/usr/share/sgml/ is in openjade 1.4devel1-21.3+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/sgml/OpenJade/
/usr/share/sgml/OpenJade/builtins.dsl
/usr/share/sgml/OpenJade/catalog
/usr/share/sgml/OpenJade/contrib/
/usr/share/sgml/OpenJade/contrib/transform.dsl
/usr/share/sgml/OpenJade/dsssl.dtd
/usr/share/sgml/OpenJade/extensions.dsl
/usr/share/sgml/OpenJade/fot.dtd
/usr/share/sgml/OpenJade/spec.dtd
/usr/share/sgml/OpenJade/style-sheet.dtd
/usr/share/sgml/OpenJade/unicode/
/usr/share/sgml/OpenJade/unicode/catalog
/usr/share/sgml/OpenJade/unicode/demo.sgm
/usr/share/sgml/OpenJade/unicode/gensyntax.pl
/usr/share/sgml/OpenJade/unicode/unicode.sd
/usr/share/sgml/OpenJade/unicode/unicode.syn