. . _:vb50821030 "Ben Adida" . _:vb50821034 . "2013-08-22" . . _:vb50821034 . "RDFa Core 1.1 - Second Edition" . _:vb50821032 "Shane McCarron" . . _:vb50821033 . . _:vb50821032 . _:vb50821034 . . _:vb50821031 "Mark Birbeck" . _:vb50821032 . _:vb50821031 . _:vb50821033 . _:vb50821030 . _:vb50821031 . _:vb50821030 . . _:vb50821033 "Ivan Herman" .