/usr/share/doc/mysql-client-5.5/NEWS.Debian.gz is in mysql-client-5.5 5.5.62-0ubuntu0.14.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/mysql-client-5.5/../mysql-client-core-5.5/NEWS.Debian.gz