SPARQL 1.1 Graph Store HTTP Protocol publication history Date Status 21 March 2013 Recommendation 29 January 2013 Proposed Recommendation 8 November 2012 Candidate Recommendation Snapshot 1 May 2012 Last Call Working Draft 12 May 2011 Last Call Working Draft 14 October 2010 Working Draft 1 June 2010 Working Draft 26 January 2010 Working Draft 22 October 2009 Working Draft