What does this warning mean when I execute riot on a .rdf file?
$ riot --validate file.rdf
WARN riot :: [line: 2, col: 35] {W119} A processing instruction is in RDF
content. No processing was done.Here's the head of the RDF/XML file <?xml version="1.0"?> <?xml-stylesheet type="text/xsl"?> <rdf:RDF xml:lang="en" ...
