JSON-LD functionality
https://w3c.github.io/json-ld-api/#the-jsonldoptions-type
https://www.w3.org/TR/json-ld11/#dfn-list-object
https://www.w3.org/TR/json-ld11/#dfn-value-object
https://www.w3.org/TR/json-ld11/#value-objects
https://www.w3.org/TR/json-ld11/#keywords
https://w3c.github.io/json-ld-api/#dfn-canonical-lexical-form
https://www.w3.org/TR/json-ld11/#the-rdf-json-datatype
https://w3c.github.io/json-ld-api/#node-map-generation
https://w3c.github.io/json-ld-api/#deserialize-json-ld-to-rdf-algorithm
https://w3c.github.io/json-ld-api/#dom-jsonldprocessor-tordf
https://w3c.github.io/json-ld-api/#list-to-rdf-conversion
https://w3c.github.io/json-ld-api/#object-to-rdf-conversion