This project converts a spreadsheet containing TCGS data elements into RDF triples and writes them out to a turtle file. There is a related project which puts REST services on top of the repository to retrieve the data elements. https://github.com/caCDE-QA/TCGA_REST
The spreadsheet was created using the SQPARL queries found in the caDE-QA wiki http://informatics.mayo.edu/caCDE-QA/index.php/Main_Page