SQUALL (Semantic Query and Update High-Level Language) is a controlled natural language for querying and updating RDF graphs. SQUALL has a strong adequacy with RDF, and covers all constructs of SPARQL, and many of SPARQL 1.1.
This demo page allows you to translate a SQUALL expression to SPARQL.
SQUALL is designed and implemented by Sébastien Ferré. Please visit the official SQUALL web page for more information, source code and papers about SQUALL.