RDF(S) and SPARQL Expressiveness in Engineering Design Patterns

In engineering product design, using RDF(s) semantic Web (SW) language, the number of instances to handle is usually large. We want to easily put additional information on property values and metadata over selected instances. Moreover, we want to use standard SPARQL in order to query the RDF graph. We have designed solutions to address a family of problems related to instance property values in engineering design patterns (order, metadata, etc.).