[,ExternalReference-method

drop

Provides methods to parse, query and serialize information
stored in the Resource Description Framework (RDF). RDF is described at <http://www.w3.org/TR/rdf-primer>.
This package supports RDF by implementing an R interface to the Redland RDF C library,
described at <http://librdf.org/docs/api/index.html>. In brief, RDF provides a structured graph
consisting of Statements composed of Subject, Predicate, and Object Nodes.

[,ExternalReference-method: Subset a list of ExternalReferences

Description

Usage

Arguments