How can I write an RDF serialization enabling me to express the fact that the United States Declaration Of Independence was written by Thomas Jefferson and Thomas Jefferson was a male? (And thus asserting that the Declaration of Independence was written by a male.)
Suppose I have the following assertion: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" > <!-- the Declaration Of Independence was authored by Thomas Jefferson --> <rdf:Description rdf:about="http://www.archives.gov/exhibits/charters/declaration_transcript.html"> <dc:creator>http://www.worldcat.org/identities/lccn-n79-89957</dc:creator> </rdf:Description> </rdf:RDF> Suppose I have a second assertion: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:foaf="http://xmlns.com/foaf/0.1/"> <!-- Thomas Jefferson was a male --> <rdf:Description rdf:about="http://www.worldcat.org/identities/lccn-n79-89957"> <foaf:gender>male</foaf:gender> </rdf:Description> </rdf:RDF> Now suppose a cool Linked Data robot came along and harvested my RDF/XML. Moreover lets assume the robot could make the logical conclusion that the Declaration was written by a male. How might the robot express this fact in RDF/XML? The following is my first attempt at such an expression, but the resulting graph (attached) doesn't seem to visually express what I really want: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#” xmlns:foaf="http://xmlns.com/foaf/0.1/“ xmlns:dc="http://purl.org/dc/elements/1.1/“> <rdf:Description rdf:about="http://www.worldcat.org/identities/lccn-n79-89957"> <foaf:gender>male</foaf:gender> </rdf:Description> <rdf:Description rdf:about="http://www.archives.gov/exhibits/charters/declaration_transcript.html"> <dc:creator>http://www.worldcat.org/identities/lccn-n79-89957</dc:creator> </rdf:Description> </rdf:RDF> Am I doing something wrong? How might you encode such the following expression — The Declaration Of Independence was authored by Thomas Jefferson, and Thomas Jefferson was a male. And therefore, the Declaration Of Independence was authored by a male named Thomas Jefferson? Maybe RDF can not express this fact because it requires two predicates in a single expression, and this the expression would not be a triple but rather a “quadrile" — object, predicate #1, subject/object, predicate #2, and subject? — Eric Morgan [cid:2A12C96F-E5C4-4C77-999C-B7FF5C2FA171@att.net]
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