This LinkedPipes ETL pipeline transforms the source evaluation data to a RDF Turtle representation using the Linked Data Event Streams, The Tree hypermedia specification and the Semantic Sensor Network Ontology.
The pipeline starts with loading the JSON files, adding a JSON-LD context and loading the files as RDF. In the second part, actions, methods, use-cases and users are skosified (transformed to skos:ConceptSchemes) and the evaluations are transformed to the form according to the target vocabularies. Finally, the resulting RDF Turtle representation is created and loaded to our SPARQL endpoint.