_:nc6cfa7bbd2f24f19bc3486dd8131fbc3xb6
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://socialsci.libretexts.org/Courses/Diablo_Valley_College/American_Government/09%3A_The_Politics_of_Public_Opinion/9.6%3A_Section_6%3A>