The DARPA agent markup language for services (DAML-S) is a semantic markup language for describing web services and related ontologies.
DAML-S is built on top of DAML+OIL.
References
edit- Paolucci, M.; K. Sycara (2003). "Autonomous Semantic Web services". Internet Computing. 7 (5): 34–41. doi:10.1109/MIC.2003.1232516.