Question: On the Waltham Forest Council, how much money was given to the Forest Recycling Project?
SPARQL:
 select sum(xsd:decimal(?amount)) as ?result from <http://linkedspending.aksw.org/uk-local-walthamforest> { ?obs qb:dataSet ls:uk-local-walthamforest. ?obs lso:uk-local-walthamforest-to <https://openspending.org/uk-local-walthamforest/to/799>. ?obs lso:uk-local-walthamforest-amount ?amount. }