id	domain	url
abc-1973	gala.gre	http://gala.gre
abc-1973	www.fao.org	http://www.fao.org/docrep/008/y5918e/y5918e11.htm
abc-1973	pubchem.ncbi	https://pubchem.ncbi
abc-1973	www.freepatentsonline.com	http://www.freepatentsonline.com/7544824.pdf