Query in d3sparql-forcegraph.html cannot be used

[walkoface]

Hi there.
The query from d3sparql-forcegraph.html cannot be used for http://dbpedia.org/sparql.
And I cannot access the cache json (cache/dbpedia/proglang_pair.json) as attached in the html.

It would be a great help if someone can point me where is the exact location of the cache json.

Thank you.