Sören Auer Jonathan Gray Claudia Müller-Birn Rufus Pollock Sara Wingate Gray Proceedings of the 5th Open Knowledge Conference, OKCon 2010, London, UK, April 24, 2010 OKCon CEUR-WS.org CEUR Workshop Proceedings 575 2010 http://ceur-ws.org/Vol-575 db/conf/okcon/okcon2010.html