APPROVED A uriref is allowed to match non-US ASCII forms conforming to Unicode Normal Form C. No escaping algorithm is applied. APPROVED A uriref which already has % escaping is permitted. No unescaping algorithm is applied. APPROVED Test for failure for uriref not in Normal Form C. APPROVED An international URI ref and its %-escaped form label different nodes in the graph. No model theoretic relationship holds between them. APPROVED An international URI ref and its %-escaped form label different nodes in the graph. No model theoretic relationship holds between them.