/usr/share/kde4/services/calligra/ is in calligrawords-data 1:2.9.7-0ubuntu12.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/services/calligra/calligra_filter_applixword2odt.desktop
/usr/share/kde4/services/calligra/calligra_filter_ascii2words.desktop
/usr/share/kde4/services/calligra/calligra_filter_docx2odt.desktop
/usr/share/kde4/services/calligra/calligra_filter_odt2ascii.desktop
/usr/share/kde4/services/calligra/calligra_filter_odt2epub2.desktop
/usr/share/kde4/services/calligra/calligra_filter_odt2html.desktop
/usr/share/kde4/services/calligra/calligra_filter_odt2mobi.desktop
/usr/share/kde4/services/calligra/calligra_filter_rtf2odt.desktop
/usr/share/kde4/services/calligra/calligra_filter_wpd2odt.desktop
/usr/share/kde4/services/calligra/calligra_filter_wps2odt.desktop