I'm not sure exactly what you mean, are you talking about entity extraction with confidence levels ala Calais? That used to be clearforest before Reuters bought them. I think entity extraction in general is so closely related to natural language quantification that it is one of those generally tough problems. In general, I feel work in this area suffers scalability issues and highly optimized point solutions will do better for a while yet. I guess we'll have to see how Bing ne Powerset does in mainstreaming this whole thing or if it'll be just a bunch of hype like twine.