/usr/share/gtk-doc/ is in libtracker-sparql-doc 0.16.2-1ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libtracker-sparql/
/usr/share/gtk-doc/html/libtracker-sparql/TrackerSparqlBuilder.html
/usr/share/gtk-doc/html/libtracker-sparql/TrackerSparqlConnection.html
/usr/share/gtk-doc/html/libtracker-sparql/TrackerSparqlCursor.html
/usr/share/gtk-doc/html/libtracker-sparql/home.png
/usr/share/gtk-doc/html/libtracker-sparql/index.html
/usr/share/gtk-doc/html/libtracker-sparql/index.sgml
/usr/share/gtk-doc/html/libtracker-sparql/left-insensitive.png
/usr/share/gtk-doc/html/libtracker-sparql/left.png
/usr/share/gtk-doc/html/libtracker-sparql/libtracker-sparql-Utilities.html
/usr/share/gtk-doc/html/libtracker-sparql/libtracker-sparql-Version-Information.html
/usr/share/gtk-doc/html/libtracker-sparql/libtracker-sparql-reference.html
/usr/share/gtk-doc/html/libtracker-sparql/libtracker-sparql.devhelp2
/usr/share/gtk-doc/html/libtracker-sparql/right-insensitive.png
/usr/share/gtk-doc/html/libtracker-sparql/right.png
/usr/share/gtk-doc/html/libtracker-sparql/style.css
/usr/share/gtk-doc/html/libtracker-sparql/tracker-examples-builder.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-examples-readonly.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-examples-writeonly-with-blank-nodes.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-examples-writeonly.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-examples.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-overview-compiling.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-overview-connection-methods.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-overview-environment-variables.html
/usr/share/gtk-doc/html/libtracker-sparql/tracker-overview.html
/usr/share/gtk-doc/html/libtracker-sparql/up-insensitive.png
/usr/share/gtk-doc/html/libtracker-sparql/up.png