@inproceedings{lope-etal-2010rdf-ann,
	Abstract = {While the current mechanism of reification in RDF is without semantics and widely considered inappropriate and cumbersome, some form of reification -- speaking about triples themselves -- is needed in RDF for many reasonable applications: in particular, reification allows for enhancing triples with annotations relating to provenance, spatio-temporal validity, degrees of trust, fuzzy values and/or other contextual information. In this position paper, we argue that -- besides resolving the issue of how to syntactically represent reification in the future (i.e., whether to stick with the current reification mechanism or standardise a different mechanism such as Named Graphs) -- it is time to agree on certain core annotations that are widely needed. We summarise existing work and provide a possible direction towards handling reification by means of a general annotation framework that can be instantiated for those major use cases we currently see arising.},
	Address = {Stanford, Palo Alto, CA, USA},
	Author = {Nuno Lopes and Antoine Zimmermann and Aidan Hogan and Gergely Luk{\'a}csy and Axel Polleres and Umberto Straccia and Stefan Decker},
	Booktitle = {W3C Workshop on RDF Next Steps},
	Day = {26--27},
	Month = JUN,
	Title = {{RDF} Needs Annotations},
	Type = WS,
	Url = {http://www.w3.org/2009/12/rdf-ws/papers/ws09},
	Year = 2010,
	Bdsk-Url-1 = {http://www.w3.org/2009/12/rdf-ws/papers/ws09}}

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