Uses NOT EXISTS to limit whether a given graph pattern exists in the data.
SPARQL: Using Operators Tutorial and Quiz
This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query [...]
Example SPARQL queries
This page, which contains SPARQL tools, tips, sample queries, is just starting out and the authors hope it can become a resource for useful snippets [...]
SPARQL in 11 minutes
This video serves as an introduction to the W3C query language for RDF, SPARQL. Before explaining SPARQL queries themselves, a brief discussion of Linked Data [...]
Simple SPARQL Tutorial: Using FILTER, NOT EXISTS, MINUS Keywords
Tutorial showing how to modify a query to return instances of data where a specific property does not exist- the FILTER, NOT EXISTS, and MINUS [...]
SPARQL by Example
This is a very in-depth resource that covers nearly every aspect of SPARQL (both 1.0 and 1.1). Includes example queries (over many datasets), links to [...]