This document is written for readers who want a first impression of the capabilities of OWL. It provides an introduction to OWL by informally describing the features of each of the sublanguages of OWL.
C. Golbreich, M. Horridge, I. Horrocks, B. Motik, and R. Shearer. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 169--182. Berlin, Heidelberg, Springer Verlag, (November 2007)