[tisryno]

Great concept but I can see it falling out of line very quickly, on the homepage I spotted "berlin -> country -> germany" Followed by "england -> capital -> London"

If you search for the key "germany" it has no results, if you search "london" it finds no results.

The fluidity of the data is definitely a hindrance, if you wanted to use the dataset you'd have to already know what you are looking for to find the value.