id	domain	url
fumecheng-3039	en.wikipedia.org	https://en.wikipedia.org/wiki/kaolinite
fumecheng-3039	en.wikipedia.org	https://en.wikipedia.org/wiki/montmorillonite
fumecheng-3039	en.wikipedia.org	https://en.wikipedia.org/wiki/illite
fumecheng-3039	www.wvgs.wvnet.edu	http://www.wvgs.wvnet.edu/www