Following the same general idea of my previous post: of whether the FRBR/RDA displays are what our users *really* want, I decided to do an experiment using a record I just made, trying to interoperate with dbpedia, which is an "authority file" of sorts in use at Wikipedia.
The catalog record is only semi-functional, but the purpose of it is with the headings. You will see the little icon that denotes "open another window" to the right of each subject. Using this, I made links into parts of dbpedia that seemed the most relevant to each subject.
The display of dbpedia is really overwhelming--there's a lot of variant languages that could disappear and the entire display could be made friendlier, that that is not the point of it since you can download the entire thing--but there is some really useful information related to each topic, but the subjects are not really 1:1. Note especially the redirects, which function as UFs.
I couldn't find anything specific for the Abu-Ghraib prison.
People may also be interested in the RDF Book Mashup that works with Dbpedia http://www4.wiwiss.fu-berlin.de/bizer/bookmashup/. He has some examples, some of which work.