id	domain	url
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/hermann_von_helmholtz
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/hermann_von_helmholtz
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/klein%e2%80%93gordon_equation
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/maxwell%27s_equations
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/klein%e2%80%93gordon_equation
easat-260	en.wikipedia.org	https://en.wikipedia.org/wiki/maxwell%27s_equations