Concept integration, connection, and reuse are at the heart of Web services. The connection between two concepts can be achieved easily provided both share the same theorematic space. This in turn can be achieved by reusing constructs from foundational concepts and standard domain theme. Although the current produce of concept development methods and tools have made it a lot easier to build a new concept, reusing concepts from existing concepts remains difficult. The main reasons for this are the uncertainty in presentation conversions of concepts from foundational concepts. In this paper we have introduced a novel method for sense certainty to help the human expert in presentation conversion.