Question: What is the total cost of generating funds for public appeals events?
SPARQL:
select sum(xsd:decimal(?amount)) as ?sum from <http://linkedspending.aksw.org/concern2012> { ?obs qb:dataSet ls:concern2012. ?obs lso:concern2012-Level3 <https://openspending.org/concern2012/Level3/costs-of-generating-funds>. ?obs lso:concern2012-Level4 <https://openspending.org/concern2012/Level4/public-appeals-events>. ?obs lso:concern2012-amount ?amount. }