Copyright for nltk source package in Huanghe V3.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: nltk
Upstream-Contact: Steven Bird 
Source: https://github.com/nltk/nltk/
Files-Excluded: nltk/six.py

Files: *
Copyright: 2001-2017 NLTK Project
                     Steven Bird 
                     Edward Loper 
                     Ewan Klein 
License: Apache-2.0

Files: nltk/treetransforms.py
Copyright: 2005-2007 Oregon Graduate Institute
License: Apache-2.0

Files: debian/*
Copyright: 2014-2015 Daniel Stender 
           2010      Robin Munn 
           2019-2022 Mo Zhou 
License: Apache-2.0

License: Apache-2.0
 Licensed under the Apache License, Version 2.0 (the "License");
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Files: nltk/stem/porter.py
Copyright: 2002 Vivake Guptaq 
License: GPL-2-with-linking-exception
 This program is free software; you can redistribute it and/or
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 Using this module statically or dynamically with other modules is
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 conditions of the GNU General Public License cover the whole combination.
 As a special exception, the copyright holders of this module give
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 you may extend this exception to your version of the module, but you
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 exception statement from your version.

Files: nltk/lazyimport.py
Copyright: 1999-2005 Marc-Andre Lemburg 
License: eGenix.com-public-license
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Files: nltk/decorators.py
Copyright: 2008 Michele Simionato 
License: BSD-2-Clause
 Redistributions of source code must retain the above copyright
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Files: nltk/app/nemo_app.py
Copyright: 2006 Aristide Grange
License: Python-2.0

Files: nltk/misc/chomsky.py
Copyright: 2005 Raymond Hettinger 
License: Python-2.0

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