(I just used that example to get your attention).
In case you didn't see the article in Slashdot... or find out about it in some other way... If you Google on a phrase that begins "who is," then a name, and then a question mark, Google will give _an answer and a reference_ as its first result. In my experiments, if it does this, it currently _always_ uses Wikipedia as the reference.
"Who is Ashlee Simpson?" yields
Property: ... a U.S. singer, actress and the younger sister of singer Jessica Simpson. According to http://en.wikipedia.org/wiki/Ashlee_Simpson
"Who is Herbert Spencer? yields
Herbert Spencer Property: ... an English philosopher. According to http://en.wikipedia.org/wiki/Herbert_Spencer
Amusingly, "Who is Beethoven?" yields
Johann Van Beethoven Property: ... was Ludwig van Beethoven's father. According to http://en.wikipedia.org/wiki/Johann_van_Beethoven