[Bigdata-developers] Inferencing from Blazegraph Workbench

[Bob D. <bo...@sn...>]

I want to have SPARQL queries on http://192.168.0.79:9999/blazegraph 
return inferred triples, so that after loading the data at 
http://learningsparql.com/2ndeditionexamples/ex417.ttl I can query for 
dc:creator values and see the dm:composer and dm:photographer values 
returned. I was able to do a query on dm:photographer with no problem, 
but couldn 't get at any inferred triples.

Based on what I saw at 
https://wiki.blazegraph.com/wiki/index.php/SPARQL_Update#Manage_truth_maintenance_in_SPARQL_UPDATE, 
on http://192.168.0.79:9999/blazegraph/#update I entered ENABLE 
ENTAILMENTS with a Type of "SPARQL Update" selected underneath. This 
gave me a bunch of errors starting with this:

java.util.concurrent.ExecutionException: 
java.util.concurrent.ExecutionException: 
org.openrdf.query.UpdateExecutionException: java.lang.RuntimeException: 
java.util.concurrent.ExecutionException: 
java.lang.ArrayIndexOutOfBoundsException: 3

I had hoped that ENABLE (or CREATE) ENTAILMENTS as an update request 
would let me query for the dc:creator values. Is this possible? What am 
I doing wrong?

Thanks,

Bob