Question: Under which directorate does the IW Council service area have the highest revenue?
SPARQL:
 select ?result from <http://linkedspending.aksw.org/iw-council-spending-2012-13-test> { ?obs qb:dataSet ls:iw-council-spending-2012-13-test. ?obs lso:iw-council-spending-2012-13-test-capitalorrevenue <https://openspending.org/iw-council-spending-2012-13-test/capitalorrevenue/revenue>. ?obs lso:iw-council-spending-2012-13-test-amount ?amount. ?obs lso:iw-council-spending-2012-13-test-directorate ?result. } order by desc(sum(xsd:decimal(?amount))) limit 1