[Doc] Explain use of RDF models #7
Description
- show that RDF is well-suited to describe the structural (semantic) aspects of objects in the industrial domain (machines, parts etc.)
- show relationships to ontologies (IOF), OPC UA, ESMF SAMM <-> AAS etc.
- add example for inserting data via Graph store protocol using turtle or JSON-LD
- show that SPARQL can be used to answer common questions regarding the structure of digital twins