/usr/share/doc/erlang-mnesia/AUTHORS.gz is in erlang-mnesia 1:20.2.2+dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/erlang-mnesia/../erlang-base/AUTHORS.gz
/usr/share/doc/erlang-mnesia/../erlang-base/AUTHORS.gz