Named entity disambiguation contests I am interested in the field of named entity disambiguation and want to learn more about it. I have heard that there are contests organised by various associations on these kind of research topics. These contests are very helpful as they give a practical experience in these fields. 

I found one such contest organised by Microsoft research here though the dates have already passed. Can anyone point me to any other such contests ? Also, is there a site which catalogues these contests so that one can just go there and know about all upcoming contests ?

Thanks in advance.
Some of the GREC shared task challenges included a named entity recognition &amp; coreference resolution component (i.e., disambiguation), but I don't think they've run GREC since 2010...?

https://sites.google.com/site/genchalrepository/reg-in-context/grec-ner