ThomasP - 1:55 pm on Feb 15, 2013 (gmt 0)
Happy that smithaa02 got his issue resolved, but ... it's not always that easy.
Trouble is that clicking the "Feedback / More info"-link (displayed below the Knowledge Panel) causes the UI to enter a Feedback-mode, which only allow marking/flagging a piece of information as incorrect. There is no way there to provide any feedback about what the marked/flagged information SHOULD be.
If the information, you're reporting as wrong, doesn't have an obvious right to it (to whomever inside Google who's handling feedback), then ... you can only hit Google's WebSearch support forum, and hope for help on getting it corrected.
* F&M : Wrong image in knowledge graph [productforums.google.com]
* SOAS: Trying to get our Google search results updated [productforums.google.com]
As to: Wikipedia scraping(?) No! In fact the only thing I ordinarily, and nearly always, see (displayed in Google's Knowledge Panel) from Wikipedia, is the µAbstract (which ends with a "Wikipedia"-link to the source, i.e. Wikipedia article).
If only Google did use Wikipedia as the primary source, then there'd be fewer errors in the Knowledge Graph.
Another example: Had Google used Wikipedia data, then Orlando Thomas would never have been declared dead:
* Orlando Thomas: Orlando Thomas ISN'T Deceased [productforums.google.com]
Note, There's is one bright side:
The Knowledge Panel is "hot news" for Google (and it does, at least short-term, serve a purpose of preventing Ad-blindness - preventing right side of SERP always being "just ads")
So, the Knowledge Panel does currently garner attention from Google.
In contrast to "yesterday news" like Google Movie Search [google.com]
* Wrong Showtimes being listed for our theater [productforums.google.com]
* Wrong marker for Light House cinema in Dublin [productforums.google.com]
* How can we get listed for cinema program on google.com/movies? [productforums.google.com]