fresnel:FormatDescriptionSubstitution
http://www.w3.org/2004/09/fresnel#FormatDescriptionSubstitution
rdfs:comment
http://www.w3.org/2000/01/rdf-schema#comment
Description of fresnel:Format ...... acement if values are missing.
@en
graph:default
https://triplydb.com/w3c/fresnel/graphs/default