adding a where clause to a query, now checks if S and P respond to .uri
adding a where clause to a query, now checks if S and P respond to .uri

mauriciobomfim/ActiveRDF,net7/ActiveRDF,ActiveRDF/ActiveRDF,mauriciobomfim/ActiveRDF,ActiveRDF/ActiveRDF,net7/ActiveRDF,mauriciobomfim/ActiveRDF,ActiveRDF/ActiveRDF,net7/ActiveRDF,net7/ActiveRDF