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After watching Kevin Ford's SWIB12 presentation recording and slides http://3windmills.com/kefo-swib12-bfi/ I have some questions about the nature of the Work class. Kevin talks about the conversion process, conversion tools, splitting of MARC records, etc. And there is an example of a BIBFRAME RDF representation of a resulting Work. Looking at the described conversion procedures and the RDF example somehow I get the feeling that BIBFRAME Works will be treated as local redundant entities. I hope I'm wrong. Of course the BIBFRAME model can be implemented in a number of ways, both as local silo and as globally shared data. But I had the impression that 'based on linked data' meant abolition of redundancy by linking instead of copying/duplicating, not just using RDF as storage format. Ideally, a Work would be described only once, and as such be similar to an authority record to which links are made from Instances and Annotations. Of course in the real world we will have a limited number of redundant Work data stores. For this we would use "sameAs" relationships. In Kevin's RDF example I see however four Instance URIs, which would only make sense if this is a local library 'record' containing links to all local holdings of the work (FRBR Manifestations, originating from local legacy MARC records). A globally shared Work entity would of course never be able to hold links to all Instances existing in the world. This would not make any sense at all. A Work would not contain any Instance links at all. Rather, all Instances of a specific Work would obviously have one link to that Work. The only use for links to Instances in a Work would be to indicate provenance, which already is taken care of by the 'derivedFrom' and 'consolidates' links in the example. Anyway, I would expect libraries only to be dealing with Annotations for their own local holdings, linking, in their own new linked data ready systems, to existing Instances (FRBR Manifestations) made available by authorities such as LoC, OCLC, publishers, etc. Of course, Works and Instances might be available for editing by other trusted parties in a wikipedia way. Lukas Koster Library Systems Coordinator Library and Information Systems Department Library of the University of Amsterdam Web: http://uba.uva.nl Mobile site: http://m.uba.uva.nl Digital Library: http://lib.uva.nl