On 05/07/2011 02:20, Wishing Carebear wrote: I'm not aware of anything, but I'd love to see an ACE implementation using Attempto, so that the example can be done with controlled natural language running ontop of Drools. ACE and Attempto are actually surprisingly easy, the ACE parser already exists and you just need to do the bean mappings for it to work: http://attempto.ifi.uzh.ch/site/ Mark