This was the presentation I gave at I-SEMANTICS 2010 for our first-prize winner at the Triplification Challenge 2010.
It describes scenarios that motivated our development of Twarql. The paper can be found at:
Pablo N. Mendes, Alexandre Passant, and Pavan Kapanipathi. 2010. Twarql: tapping into the wisdom of the crowd. In Proceedings of the 6th International Conference on Semantic Systems (I-SEMANTICS '10), Adrian Paschke, Nicola Henze, and Tassilo Pellegrini (Eds.). ACM, New York, NY, USA, , Article 45 , 3 pages. DOI=10.1145/1839707.1839762 http://doi.acm.org/10.1145/1839707.1839762