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#blank-nodes
Annotationproperty Vs. Dataproperty - Answers
Annotation versus data properties: modeling and reasoning
There are significant differences in OWL DL concerning modeling and reasoning. Modeling: For annotation properties, you cannot place any axioms (OWL 1 DL) or only few axioms (OWL 2 DL: subsumption, domain and range) on them, and you cannot use them in class or property…
Rdf Primer
Blank nodes for things without URIs
Blank nodes also provide a way to more accurately make statements about resources that may not have URIs, but that are described in terms of relationships with other resources that do have URIs. [..] The point is that saying something like "the author of the book is…