/usr/share/docutils/writers/s5_html/ is in docutils-common 0.8.1-4ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/docutils/writers/s5_html/themes/
/usr/share/docutils/writers/s5_html/themes/README.txt
/usr/share/docutils/writers/s5_html/themes/big-black/
/usr/share/docutils/writers/s5_html/themes/big-black/__base__
/usr/share/docutils/writers/s5_html/themes/big-black/framing.css
/usr/share/docutils/writers/s5_html/themes/big-black/pretty.css
/usr/share/docutils/writers/s5_html/themes/big-white/
/usr/share/docutils/writers/s5_html/themes/big-white/framing.css
/usr/share/docutils/writers/s5_html/themes/big-white/pretty.css
/usr/share/docutils/writers/s5_html/themes/default/
/usr/share/docutils/writers/s5_html/themes/default/blank.gif
/usr/share/docutils/writers/s5_html/themes/default/framing.css
/usr/share/docutils/writers/s5_html/themes/default/iepngfix.htc
/usr/share/docutils/writers/s5_html/themes/default/opera.css
/usr/share/docutils/writers/s5_html/themes/default/outline.css
/usr/share/docutils/writers/s5_html/themes/default/pretty.css
/usr/share/docutils/writers/s5_html/themes/default/print.css
/usr/share/docutils/writers/s5_html/themes/default/s5-core.css
/usr/share/docutils/writers/s5_html/themes/default/slides.css
/usr/share/docutils/writers/s5_html/themes/default/slides.js
/usr/share/docutils/writers/s5_html/themes/medium-black/
/usr/share/docutils/writers/s5_html/themes/medium-black/__base__
/usr/share/docutils/writers/s5_html/themes/medium-black/pretty.css
/usr/share/docutils/writers/s5_html/themes/medium-white/
/usr/share/docutils/writers/s5_html/themes/medium-white/framing.css
/usr/share/docutils/writers/s5_html/themes/medium-white/pretty.css
/usr/share/docutils/writers/s5_html/themes/small-black/
/usr/share/docutils/writers/s5_html/themes/small-black/__base__
/usr/share/docutils/writers/s5_html/themes/small-black/pretty.css
/usr/share/docutils/writers/s5_html/themes/small-white/
/usr/share/docutils/writers/s5_html/themes/small-white/framing.css
/usr/share/docutils/writers/s5_html/themes/small-white/pretty.css