You should look at Metaweb query language (http://mql.freebaseapps.com/ch03.html http://mql.freebaseapps.com/ch03.html) -- it uses JSON in a reasonably intellig

You should look at Metaweb query language (http://mql.freebaseapps.com/ch03.html http://mql.freebaseapps.com/ch03.html) -- it uses JSON in a reasonably intelligent way to do precisely this.