RE: soliciting your favorite (public) SPARQL queries!

Hi Lee

I have a SPARQL tutorial based on the classic EMP-DEPT database example (which clearly fails your requirements 4 and 5!) but may be of some interest to you and others on the list.  It is part of the XQuery Wikibook I've been working on, as are some more complex queries based on dbpedia.  

http://en.wikibooks.org/wiki/XQuery/The_Emp-Dept_case_study

and the chapter

http://en.wikibooks.org/wiki/XQuery#The_Semantic_Web

Its a work in progress of course.

Chris

Chris Wallace
University of the West of England, Bristol

-----Original Message-----
From: public-lod-request@w3.org on behalf of Lee Feigenbaum
Sent: Thu 21/08/2008 6:58 AM
To: public-sparql-dev@w3.org; public-lod@w3.org
Subject: soliciting your favorite (public) SPARQL queries!
 

Hi everyone,

I'm putting together a "SPARQL by Example" tutorial, which is, as the 
name suggests, a step-by-step introduction to SPARQL taught almost 
entirely through complete, runnable SPARQL queries.

So far, I've gathered a great deal of example queries myself, but I know 
that many subscribers to these lists probably have favorite queries of 
their own that you might be willing to share with me.

I'm looking for:

1) SPARQL queries
2) ...that can be run by anyone (no private data sets)
3a)...either by running the query against a public SPARQL endpoint
3b)...or by using a public SPARQL endpoint that will fetch 
HTTP-accessible RDF data (e.g. sparql.org or demo.openlinksw.com)
4) ...that answers a real* question
5) ...and that is fun!**

* real is in the eye of the beholder, I imagine, but I'm not looking for 
  "finds the predicates that relate ex:s and ex:o in this sample RDF graph"

** fun is also in the eye of the beholder. fun can be a query on fun 
data; a clever query that may illustrate a particular SPARQL construct 
("trick"); a query that integrates interesting information; a query with 
surprising results; etc.

thanks to anyone who is able to contribute!
Lee

PS I plan to make the tutorial slides available online under an 
appropriate CC license once they are completed.



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