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
P. Bonatti, und L. Sauro. Proceedings of the 3rd International Workshop on Applications of Logic Programming to the (Semantic) Web and Web Services (ALPSWS2008), Udine, Italy, Volume 434 von CEUR Workshop Proceedings, Sun SITE Central Europe, (2009)