[1] RDF Schema 1.1 ( ( 版)) https://dvcs.w3.org/hg/rdf/raw-file/default/rdf-schema/index.html#h3_ch_type
[2] Web Annotation Vocabulary () https://w3c.github.io/web-annotation/vocab/wd/#rdf-type
[3] Table Schema | Frictionless Standards, , https://specs.frictionlessdata.io/table-schema/#rich-types