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Bobillo, Fernando, Paulo Cesar G. da Costa, Claudia d'Amato, Nicola Fanizzi, Kathryn B. Laskey, Kenneth J. Laskey, Thomas Lukasiewicz, et al., eds. 2009. Proceedings of the 5th International Workshop on Uncertainty Reasoning for the Semantic Web‚ URSW 2009‚ Washington DC‚ USA‚ October 26‚ 2009. CEUR−WS.org.