Discover parameters used by SPARQL services that don't support SPARQL-FED
Many public SPARQL endpoints are SPARQL-FED compliant, which makes use of SPARQL-FED unpredicatable.
A SPARQL endpoint mesh without SPARQL-FED support undermines the power of SPARQL in general i.e., the fact that its inherently distributed, unlike SQL.
You can discover parameters used by SPARQL services that don't support SPARQL-FED, in regards to SPARQL query solution (results) publication, and then use them in SPARQL-FED.
for example by executing the following query:
SELECT DISTINCT ?EntityType
?Entity a ?EntityType