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raptor is a free software / Open Source C library that provides a set of parsers for RDF/XML, N-Quads, N-Triples 1.0 and 1.1, TRiG, Turtle 2008 and 2013, RDFa 1.0 and 1.1, RSS tag soup including all versions of RSS, Atom 1.0 and 0.3, GRDDL and microformats for HTML, XHTML and XML.
raptor supports parsing
[…] The default configuration of the GRDDL parser also reads microformats (hcard, hcalendar) […]