I wonder if it is based on Freebase.com knowledge graph, which Google discontinued last month. http://www.freebase.com/ http://www.freebase.com/ (and recently I

I wonder if it is based on Freebase.com knowledge graph, which Google discontinued last month. http://www.freebase.com/ http://www.freebase.com/ (and recently IBM has bought Blekko web search and knowledge graph engine as a replacement for Freebase to power their IBM Watson)