/usr/share/ubiquity-slideshow/slides/l10n/tg/ is in ubiquity-slideshow-edubuntu 113.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ubiquity-slideshow/slides/l10n/tg/accessibility.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/arkose.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/calc.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/calibre.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/desktop-software.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/documentation.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/edubuntu-menu-editor.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/empathy.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/epoptes.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/fonts.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/freemind.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/gbrainy.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/installing-software.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/kdeedu.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/librecad.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/ltsp.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/pencil.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/testdrive.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/tomboy.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/tux4kids.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/underthehood.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/vym.html
/usr/share/ubiquity-slideshow/slides/l10n/tg/welcome.html