It looks like the feature where you can see a miniature knowledge graph overall for individual snippets is gone from Google. It launched officially in January 2014 as snippet knowledge graphs and it looked like this:
It came up a ton for Wikipedia results in Google but also for other sites. It often cited data from within Wikipedia or other data sources in Google's knowledge graph.
But as of yesterday, it seems to have gone away. RankRanger posted about the drop this morning saying Google features tracking tool spotted the drop. Here is a screen shot of the tool showing the full decline in this feature showing up in Google's search results:
I am not sure if this is a bug or if Google decided to remove this feature. I have asked and hope to let you all know.
Forum discussion at Twitter.