Really nicely done! I like how entities, concepts, etc. are color hilited in the original input text, and the Wikipedia links with thumb nail images shown in the results.
I have something similar that I have been working on for years as a side project: http://kbsportal.com/ I also resolve entities to DBPedia URIs.
I have something similar that I have been working on for years as a side project: http://kbsportal.com/ I also resolve entities to DBPedia URIs.