next_page_link: //div[@class='nextpage_continue']/a
strip: //div[@class='nextpage_continue']
strip_id_or_class: nextpage
title: //div[@class='article_title']//h1
body: //div[@class='article_title']/..
body: //div[@class='content']
test_url: http://ngm.nationalgeographic.com/2012/02/tsunami/folger-text