ServiceGraphPattern not implemented ?

[rnd0101]

While performing the following script with SPARQL query:

# INFO:rdflib:RDFLib Version: 4.2.1-dev

from rdflib import Graph
from rdflib import Namespace
from rdflib import URIRef

OWL = Namespace("http://www.w3.org/2002/07/owl#")

g = Graph()
g.namespace_manager.bind('owl', URIRef("http://www.w3.org/2002/07/owl#"))
g.namespace_manager.bind('xsd', URIRef("http://www.w3.org/2001/XMLSchema#"))


qres = g.query("""
PREFIX foaf:    <http://xmlns.com/foaf/0.1/>
PREFIX dbpprop: <http://dbpedia.org/property/>

SELECT ?place (AVG(?rain) as ?avgRain)
WHERE{
  VALUES ?rainPred {
    dbpprop:janRainMm dbpprop:febRainMm dbpprop:marRainMm dbpprop:aprRainMm
    dbpprop:mayRainMm dbpprop:junRainMm dbpprop:julRainMm dbpprop:augRainMm
    dbpprop:sepRainMm dbpprop:octRainMm dbpprop:novRainMm dbpprop:decRainMm
  }
  SERVICE <http://dbpedia.org/sparql> {
     ?place ?rainPred ?rain .
  }
}
GROUP BY ?place
HAVING (COUNT(?rain) = 12)
ORDER BY ?avgRain
""" )

for row in qres:
    print row

( thanks to http://answers.semanticweb.com/questions/22080/whats-your-favorite-recent-public-sparql-endpoint for an example idea)

I am getting: Exception: ServiceGraphPattern not implemented

The same query is executed fine in, for example, Sesame workbench.

Fixed in #943