Data Formats / Schemas Query / Access / Transport Protocols Output Formats Standard HTML/XHTMLWeb pages (limited extraction) XML XML Schema RDF, and the N3 and Turtle variants RDFa eRDF Free text Microformats (hAtom, hCalendar, hCard, hReview, hResume, rel-directory, rel-nofollow, rel-tag, xFolk, XFN, XOXO) WebCal Atom / RSS / OPML feeds AtomOWL