_:nb5099cad26494b71913865e1feb742ffxb6
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://knowledge.exlibrisgroup.com/DigiTool/Knowledge_Articles/Can't_create_thumbnails_full-text_indexes_from_some_PDFs%2C_why%3F%3A?v=2>