RIF RDF and OWL Compatibility (Second Edition) publication history Date Status 5 February 2013 Recommendation 11 December 2012 Proposed Edited Recommendation 22 June 2010 Recommendation 11 May 2010 Proposed Recommendation 1 October 2009 Candidate Recommendation Snapshot 3 July 2009 Last Call Working Draft 30 July 2008 Working Draft 15 April 2008 Working Draft 30 October 2007 Working Draft