Binding Ontology to Virtual Graph auto generated mapping

The auto generated mapping exposes a row of a table, creates a ?subject that has a unique key, and makes column variables with the right type.
I consider this an information layer binding, but not a knowledge layer binding.

I would like to bind each column to objects and properties in my ontology
How do I do this? i.e. how do I build upon the auto generated mapping and add another layer that goes from the mappings to the ontology?

Obviously, I am missing something conceptual :wink:
Pointers to tutorials would be helpful.

You can either use custom mappings or rules. I’m on my phone right now but I’ll follow up with some links but you can start with