id	domain	url
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/alkali_metal
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/group_3_element
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/group_6_element
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/semiconductor_material
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/copper
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/indium
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/gallium
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/selenium
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/solid_solution
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/tetrahedral
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/chemical_bond
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/chalcopyrite
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/bandgap
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/solar_cell
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/copper_indium_gallium_selenide_solar_cells
alkej-225	en.wikipedia.org	http://en.wikipedia.org/wiki/copper_indium_gallium_selenide_solar_cells