/usr/lib/guile-gnome-2/libgw-guile-gnome-libgnomeui.so.0 is in guile-gnome2-gnome-ui 2.16.2-1.1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/guile-gnome-2/libgw-guile-gnome-libgnomeui.so.0.0.0