Copyright for docbook-xml source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: DocBook XML
Upstream-Contact: docbook@lists.oasis-open.org
Source: https://www.oasis-open.org/docbook/xml/

Files: *
Copyright: 1992-2006 HaL Computer Systems, Inc., O'Reilly & Associates, Inc.,
                     ArborText, Inc., Fujitsu Software Corporation, Norman
                     Walsh, Sun Microsystems, Inc., and the Organization
                     for the Advancement of Structured Information Standards
                     (OASIS).
License: Docbook

Files: debian/*
Copyright: 1999-2006 Adam Di Carlo 
           2004      Steve Langasek 
           2007-2009 Daniel Leidert (dale) 
           2012      Jakub Wilk 
           2013      Helmut Grohne
           2013      Julien Cristau 
           2015      Wookey 
           2016      Michael Biebl 
           2019      Niels Thykier 
           2021      João Seckler 
           2021      Marcos Talau 
License: GPL-2+

License: Docbook
 Permission to use, copy, modify and distribute the DocBook XML DTD and
 its accompanying documentation for any purpose and without fee is
 hereby granted in perpetuity, provided that the above copyright notice
 and this paragraph appear in all copies. The copyright holders make no
 representation about the suitability of the DTD for any purpose. It is
 provided "as is" without expressed or implied warranty.
 .
 If you modify the DocBook DTD in any way, except for declaring and
 referencing additional sets of general entities and declaring
 additional notations, label your DTD as a variant of DocBook. See
 the maintenance documentation for more information.
 .
 Please direct all questions, bug reports, or suggestions for
 changes to the docbook@lists.oasis-open.org mailing list. For more
 information, see http://www.oasis-open.org/docbook/.

License: GPL-2+
 This package is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 .
 This package is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 .
 You should have received a copy of the GNU General Public License
 along with this program. If not, see .
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in "/usr/share/common-licenses/GPL-2".