[Bloehdorn et al. 2011] Bloehdorn, S., Blohm, S., Cimiano, P., Giesbrecht, E., Hotho, A., Lösch, U., Mädche, A., Mönch, E., Sorg, P., Staab, S. and Völker, J.: "Combining Data-Driven and Semantic Approaches for Text Mining." Fensel, D., eds.; Foundations for the Web of Information and Services, Springer (2011), 115-142.