. _:vb50820907 "Deborah McGuinness" . "2013-04-30" . _:vb50820908 . . _:vb50820906 "Satya Sahoo" . . _:vb50820908 . _:vb50820906 . . "PROV-O: The PROV Ontology" . _:vb50820908 . _:vb50820907 . . _:vb50820905 . _:vb50820907 . _:vb50820905 "Timothy Lebo" . . _:vb50820906 . . _:vb50820905 .