<https://www.commonwealthfoundation.org/2012/09/25/7-education-facts-unions-dont-want-you-to-know/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.commonwealthfoundation.org/2012/09/25/7-education-facts-unions-dont-want-you-to-know/>