Rule-based Semantic Web Services
	• Rules/LP in appropriate combination with DL as KR, for RSWS – DL good for categorizing:   a service overall, its inputs, its outputs • Rules to describe service process models – rules good for representing: • preconditions and postconditions, their contingent relationships • contingent behavior/features of the service more generally, –  e.g., exceptions/problems – familiarity and naturalness of rules to software/knowledge engineers • Rules to specify deals about services:  cf. e-contracting.