Context: Return proper meshes if requested
The context contains, among others, triples such as:
<urn:N3fb54d31bb0d452ab417ac21fcfd2e8b> a soma:MeshShape ;
soma:hasFilePath "http://localhost:5000/kenney.nl/chairModernFrameCushion.dae" ;
soma:hasShapeParameter 1e+00 .
The file path should resolve so that interested parties can download the dae files.