[Nepomuk] SPARQL Query reference

[Lindsay Mathieson]

Is there a decent SPARQL reference anywhere? the only links for I could find 
for nepomuk  are:

http://techbase.kde.org/Projects/Nepomuk/SparqlQueries
http://techbase.kde.org/Development/Tutorials/Metadata/Nepomuk/AdvancedQueries

Where "advanced" doesn't even cover the syntax for "AND"

Also is there a test query tool a little more advanced than "nepomukcmd query" 
?

thanks,

-- 
Lindsay
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