/usr/share/app-install/desktop/marble:marble_geo.desktop is in app-install-data 15.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | [Desktop Entry]
X-AppInstall-Package=marble
X-AppInstall-Popcon=1015
X-AppInstall-Section=universe
Type=Application
Exec=marble --geo-uri=%u
Name=Marble
MimeType=x-scheme-handler/geo;
Terminal=true
NoDisplay=true
X-Ubuntu-Gettext-Domain=app-install-data
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