CycQL is a Jena+ARQ based SPARQL adapter for OpenCyc 2.0. It enables one of the most powerful inference engines in the world to be used with Semantic Web tools. Cyc itself achieves scalability and optimizes inference by restricting the search space to the relevant subset of microtheories. The main features of this release are the SPARQL 1.1 syntax, the identification of named graphs with microtheories, the use of RDF (DBpedia) URLs, and special handling of Cyc Non-Atomic Terms (NATs).
ConceptNet is a semantic network containing lots of things computers should know about the world, especially when understanding text written by people.
It is built from nodes representing concepts, in the form of words or short phrases of natural language, and labeled relationships between them. These are the kinds of things computers need to know to search for information better, answer questions, and understand people's goals. If you wanted to build your own Watson, this should be a good place to start!
As statistics-based search engines become increasingly powerful, is there still a role for common sense knowledge and reasoning? Participate in a global effort to develop the world's most comprehensive knowledge base! Play FACTory, and help improve Cyc's
C. Matuszek, J. Cabral, M. Witbrock, and J. DeOliveira. Proceedings of the 2006 AAAI Spring Symposium on Formalizing and Compiling Background Knowledge and Its Applications to Knowledge Representation and Question Answering, (2006)