Question: What was the smallest amount for industrial and commercial facilities in the Dublin City Council Expenditure Budget of 2013?
SPARQL:
 select min(xsd:decimal(?amount)) as ?sum from <http://linkedspending.aksw.org/dcc_exp_budget2013> { ?obs qb:dataSet ls:dcc_exp_budget2013. ?obs lso:dcc_exp_budget2013-Service <https://openspending.org/dcc_exp_budget2013/Service/d04>. ?obs lso:dcc_exp_budget2013-amount ?amount. }