What is Schema Salad about?

Hi,

I am not quite clear looking at the documentation what Schema Salad is about.
My guess is that it could provide what [CSV for the Web W3C standard](https://www.w3.org/2013/csvw/wiki/Main_Page) provides for CSV files. See the examples in the [csv2rdf](https://w3c.github.io/csvw/csv2rdf/) document.

Something like that would allow BigData engineers to work with Avro binary files, but easily be able to find out what the URL for a specific relation or type is, or even how to construct the subject url if available. That would not add any complexity to the Avro encoding but would make it able to work with data from many other areas and also make it easy to find definitions by using HTTP on the relation or Class is.

Am I guessing correctly that this is the main use case for SALAD?