| http://www.w3.org/ns/prov#value | - The Schema.org initiative???launched in 2011 by Google, Bing, and Yahoo! and later joined by Yandex???provides a core vocabulary for mark-up that helps search engines and other web crawlers more directly make use of the underlying data that powers many online services.OCLC is working with the Schema.org community to develop and add a set of vocabulary extensions to WorldCat data.
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