That said, looking at the code, I'm not sure why you call it an AI when it is very rule-based so the code itself is not able to have any "intelligent" behavior when the input falls out of the predefined rules.
More importantly, as you seem to be the creator of the underlying BigDb project, is there any actual data in it past the precise examples given in your README?
http://thebigdb.com/recent The only recent examples visible are about the weight and dimensions of the iPhone 5 vs Galaxy S4 vs Nexus 5, as in your NLP examples.
http://thebigdb.com/random Gives the same results, I expect random takes the whole DB as the sample set.
http://thebigdb.com/search?q=everest No result found.