Visualization of ChemSpider VoID provenance. Both subsets are attributed to chemspider.com (pav:retrievedBy), and derived from gz/zip files (pav:retrievedFrom). The VoID file itself is attributed to “me” (pav:createdBy) and derived from void.rdf (pav:derivedFrom). Note that the labels above are generated by ProvToolbox based on the URIs – the n-prefix indicates a prov:Entity. Figure converted from SVG diagram which was produced by Taverna workflow .