Japanese text. The extraction method can be changed with
the plug-in mechanism.
Author: Kazuhiro Osawa <ko@yappo.ne.jp>
WWW: http://search.cpan.org/~yappo/Lingua-JA-Summarize-Extract-0.01/
PR: ports/111454
Submitted by: Masahiro Teramoto <markun at onohara.to>