Question: How much interest did the debt service of the city of Whiteacre spend?
SPARQL:
 select sum(xsd:decimal(?amount)) as ?result from <http://linkedspending.aksw.org/city-of-whiteacre-spending> { ?obs qb:dataSet ls:city-of-whiteacre-spending. ?obs lso:city-of-whiteacre-spending-object <https://openspending.org/city-of-whiteacre-spending/object/9022.0>. ?obs lso:city-of-whiteacre-spending-to <https://openspending.org/city-of-whiteacre-spending/to/851006>. ?obs lso:city-of-whiteacre-spending-amount ?amount. }