ArticleExtractor        A full-text extractor which is tuned towards
                        news articles.
ArticleSentencesExtractor
                        A full-text extractor which is tuned towards
                        extracting sentences from news articles.
CanolaExtractor         A full-text extractor trained on a 'krdwrd'
                        Canola (see
                        'https://krdwrd.org/trac/attachment/wiki/Corpora/Canola/CANOLA.pdf'.
DefaultExtractor        A quite generic full-text extractor.
Extractor               Generic extraction function which calls
                        boilerpipe extractors
KeepEverythingExtractor
                        Marks everything as content.
LargestContentExtractor
                        A full-text extractor which extracts the
                        largest text component of a page.
NumWordsRulesExtractor
                        A quite generic full-text extractor solely
                        based upon the number of words per block (the
                        current, the previous and the next block).
boilerpipeR-package     Extract the main content from HTML files
content                 Wordpress generated Webpage (retrieved from
                        Quantivity Blog <URL:
                        http://quantivity.wordpress.com>). Content is
                        saved as character and ready to be extracted.
