ConceptNet is a freely available commonsense knowledgebase and natural-language-processing toolkit which supports many practical textual-reasoning tasks over real-world documents right out-of-the-box (without additional statistical training) including
D. Milward, and M. Beveridge. Proceedings of the 3rd IJCAI Workshop on Knowledge and Reasoning in Practical Dialogue Systems, Acapulco, Mexico, page 9-18. (2003)