[1] RDF Schema 1.1 ( (2014-02-27 21:42:23 +09:00 版)) https://dvcs.w3.org/hg/rdf/raw-file/default/rdf-schema/index.html#h3_ch_type
[2] Web Annotation Vocabulary (2017-02-24 02:14:26 +09:00) https://w3c.github.io/web-annotation/vocab/wd/#rdf-type
[3] Table Schema | Frictionless Standards, 2023-09-28T10:34:45.000Z, 2023-11-25T08:46:06.160Z https://specs.frictionlessdata.io/table-schema/#rich-types
rdfType