/usr/share/doc/python3-pyqt4.phonon/changelog.Debian.gz is in python3-pyqt4.phonon 4.12.1+dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python3-pyqt4.phonon/../python3-pyqt4/changelog.Debian.gz