[Developers] how to associate an originally created article with a Wikipedia article

[Raymond Yee]

My understanding is that a lot of freebase topics are associated with a 
wikipedia link because the description of the topic was originally drawn 
from the wikipedia. My question is what I should do if the topic was not 
associated with a wikipedia article but I'd like to tie the article back 
to the corresponding wikipedia article.

For example,

California’s 8th Senate District is represented as 
http://www.freebase.com/view/guid/9202a8c04000641f8000000006f5c69d -- I 
see that it's not tied to the corresponding wikipedia article 
http://en.wikipedia.org/wiki/California%27s_8th_State_Senate_district

I just edited the freebase article description by copying the 
description over and pasting in a link. Do I associate the freebase 
article with the wikipedia article by writing to 
/common/document/source_uri property of the topic?

-Raymond