W3C Recommendation 27 September 2012 This version: http://www.w3.org/TR/2012/REC-r2rml-20120927/ Latest version: http://www.w3.org/TR/r2rml/ Previous version: http://www.w3.org/TR/2012/PR-r2rml-20120814/ Editors: Souripriya Das, Oracle Seema Sundara, Oracle Richard Cyganiak, DERI, National University of Ireland, Galway Please refer to the errata for this document, which may include some normative