The W3C RDFa Working Group has published the First Public Working Draft of the RDFa API. RDFa API provides a mechanism that allows Web-based applications using documents containing RDFa markup to extract and utilize structured data in a way that is useful to developers. The specification details how a developer may extract, store and query structured data contained within one or more RDFa-enabled documents. The design of the system is modular and allows multiple pluggable extraction and storage mechanisms supporting not only RDFa, but also Microformats, Microdata, and other structured data formats.

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