When I added licensing information on the github repository for my Haskell NLP experiments I specified the AGPL v3 license. I just changed it to GPL v3 so now it can be used as a web service without affecting the rest of any system that you use it for. I also did some code cleanup this morning. In addition to the natural language processing code, this repository also contains some example SPARQL client code and my Open Calais client library that you might find useful.
Some news about IBM Watson: their developer web site now has more documentation and example code available without needing to register to become an IBM Watson Partner.
I am helping a long term customer use IBM Watson as a web service over the next several months so I registered as a partner and have been enjoying reading all of the documentation on training an instance for a specific application, the REST APIs, etc. Good stuff, and I think IBM may grow a huge business around Watson.