/usr/share/kde4/services/calligra/ is in calligraplan 1:2.9.7-0ubuntu12.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/services/calligra/calligra_filter_mpp2plan.desktop
/usr/share/kde4/services/calligra/calligra_filter_mpx2plan.desktop
/usr/share/kde4/services/calligra/calligra_filter_planner2plan.desktop
/usr/share/kde4/services/calligra/krossmoduleplan.desktop
/usr/share/kde4/services/calligra/plan_icalendar_export.desktop
/usr/share/kde4/services/calligra/plan_kplato_import.desktop
/usr/share/kde4/services/calligra/planpart.desktop
/usr/share/kde4/services/calligra/planrcpsscheduler.desktop
/usr/share/kde4/services/calligra/planscripting.desktop
/usr/share/kde4/services/calligra/plantjscheduler.desktop
/usr/share/kde4/services/calligra/planworkpart.desktop