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Some parts of the RDF and RDFS vocabularies are not assigned any formal meaning, and in some cases, notably the reification and container vocabularies, it assigns less meaning than one might expect.These cases are noted in the text and the limitations discussed in more detail.This is one document in a set of six (Primer, Concepts, Syntax, Semantics, Vocabulary, and Test Cases) intended to jointly replace the original Resource Description Framework specifications, RDF Model and Syntax (1999 Recommendation) and RDF Schema (2000 Candidate Recommendation).It has been developed by the RDF Core Working Group as part of the W3C Semantic Web Activity (Activity Statement, Group Charter) for publication on 10 February 2004.Simple Entailment between RDF graphs 2.1 Vocabulary interpretations and vocabulary entailment 3.Interpreting the RDF vocabulary 3.1 RDF Interpretations 3.2 RDF Entailment 3.3 Reification, Containers, Collections and rdf:value 3.3.1 Reification 3.3.2 RDF Containers 3.3.3 RDF Collections 3.3.4 rdf:value 4. Change Log (Informative) RDF is an assertional language intended to be used to express propositions using precise formal vocabularies, particularly those specified using RDFS [], for access and use over the World Wide Web, and is intended to provide a basic foundation for more advanced assertional languages with a similar purpose.

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(Document Status Update, 25 February 2014) The RDF Working Group has produced a W3C Recommendation for a new version of RDF which adds features to this 2004 version, while remaining compatible.RDF is an assertional logic, in which each triple expresses a simple proposition.This imposes a fairly strict monotonic discipline on the language, so that it cannot express closed-world assumptions, local default preferences, and several other commonly used non-monotonic constructs.W3C's role in making the Recommendation is to draw attention to the specification and to promote its widespread deployment.This enhances the functionality and interoperability of the Web.

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