/usr/share/doc/qt5-default/changelog.Debian.gz is in qt5-default 5.2.1+dfsg-1ubuntu14.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/qt5-default/../libqt5core5a/changelog.Debian.gz
/usr/share/doc/qt5-default/../libqt5core5a/changelog.Debian.gz