Galaxy workflow for use case “A simple example”. Top: Galaxy “Workflow view” interface; bottom: simplified version, with detailed depiction of files, including RDF triples (not all the triples shown). The workflow starts with a TSV file containing the information that will be sent as input to the SADI service pdb2uniprot (Input dataset). The file is processed to convert it to a column format Galaxy can recognise (Convert) and then transformed to RDF with the Tab-to-RDF and RDF format tools from the SPARQL tools tool-set. The RDF file is submitted to the pdb2uniprot SADI service using the SADI services generic caller and the output RDF is sent to the uniprotInfo SADI service, also with the SADI services generic caller. The output RDF from the uniprotInfo SADI service can be converted to a TSV file with RDF Syntax Converter or queried with SPARQL (Execute an SPARQL query against an RDF file) to obtain concrete information (Also in TSV format). Note that triples are added to the RDF input as a result of executing a SADI service, in pdb2uniprot and uniprotInfo.