r-cran-redland 1.0.17-11-1 (amd64 binary) in ubuntu focal

 GNU R methods to parse, query and serialize information stored in the
 Resource Description Framework (RDF).
 .
 This package supports RDF by implementing an R interface to the Redland
 RDF C library. In brief, RDF provides a structured graph consisting of
 Statements composed of Subject, Predicate, and Object Nodes.