id	domain	url
crln-9563	www.emarketer.com	www.emarketer.com/article
crln-9563	nces.ed.gov	http://nces.ed.gov/pubs2016/2016007
crln-9563	www.oclc.org	https://www.oclc.org/content/emailcontent-et/en/abstracts
crln-9563	digitalcontentnext.org	https://digitalcontentnext.org/blog/2016/08/23/no-comment-npr-joins-the-growing-list-of-media-companies
crln-9563	www.pewinternet.org	www.pewinternet.org/2016/09/01