/usr/share/doc/libxmlada-dom4.6/changelog.Debian.gz is in libxmlada-dom4.6 17.1.2017-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxmlada-dom4.6/../libxmlada-sax4.6.2016/changelog.Debian.gz