Examples of Scientific Semantic Web wanted

I am giving a talk on Friday where I want to show the power and wow! of the Semantic Web applied to Science through an online example. I'd be keen on a DBPedia example (along the lines of http://wiki.dbpedia.org/OnlineAccess#h28-5 with "All soccer players, who played as goalkeeper for a club that has a stadium with more than 40.000 seats and who are born in a country with more than 10 million inhabitants") but with a scientific content. But even this no longer works.
I have a general audience so I don't want to talk through raw SPARQL (although I'll hack it if necessary as long as there is an answer). I need something that can be demo'ed in a minute at most. In the medium term we will be able to hack this with molecules as we will be contributing Open RDF for molecules and structures.
The advantage of DBPedia (and to a lesser extent the whole LOD cloud) is that it has not been planned and I'd be grateful for examples that reflect this.
Any help will of course be acknowledged.