/usr/share/entity-map/0.1.0/GFextra.2l1b is in linuxdoc-tools 0.9.72-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/entity-map/0.1.0/GFextra.2ab
/usr/share/entity-map/0.1.0/GFextra.2ab