to, name, honorific prefix, affiliation, email address, and homepage, or the Person vocabulary of Schema.org. Similarly, a book can be described using the Book vocabulary of Schema.org and general publication terms from the Dublin Core vocabulary, an event with the Event vocabulary of Schema.org, and so on. To use machine-readable terms from any controlled vocabulary, web designers can choose from a variety of annotation formats, including RDFa, HTML5 Microdata, or JSON-LD in the markup, or RDF serializations (RDF/XML, Turtle, N3, TriG, TriX) in external files. See also References Information retrieval techniques Library cataloging and classification Knowledge representation Technical communication Semantic Web Ontology (information science) Information science Identifiers External Links Directory of Linked Open Vocabularies (LOV)