Some test cases used in this software rely on articles written in Wikitext that
were taken from the English Wikipedia. These articles are licensed under the
Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license which can be found 
at http://creativecommons.org/licenses/by-sa/3.0/. Each directory that contains
such files holds a NOTICE file which gives detailed information about the 
origin of the articles.
