/usr/share/ubiquity-slideshow/slides/l10n/es/ is in ubiquity-slideshow-kubuntu 83.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ubiquity-slideshow/slides/l10n/es/accessibility.html
/usr/share/ubiquity-slideshow/slides/l10n/es/games.html
/usr/share/ubiquity-slideshow/slides/l10n/es/get-help.html
/usr/share/ubiquity-slideshow/slides/l10n/es/get-involved.html
/usr/share/ubiquity-slideshow/slides/l10n/es/graphics.html
/usr/share/ubiquity-slideshow/slides/l10n/es/installing-software.html
/usr/share/ubiquity-slideshow/slides/l10n/es/internet.html
/usr/share/ubiquity-slideshow/slides/l10n/es/multimedia.html
/usr/share/ubiquity-slideshow/slides/l10n/es/office.html
/usr/share/ubiquity-slideshow/slides/l10n/es/pim.html
/usr/share/ubiquity-slideshow/slides/l10n/es/welcome.html