true prefix oplsioc: prefix sioc: prefix foaf: select ?ord+>tpch:orderkey, sum(?li+>tpch:lineextendedprice*(1 - ?li+>tpch:linediscount)) as ?revenue, ?ord+>tpch:orderdate, ?ord+>tpch:shippriority from where { ?cust a tpch:customer ; tpch:mktsegment "BUILDING" ; tpch:customer_of ?ord . ?li tpch:has_order ?ord . filter ((?ord+>tpch:orderdate < "1995-03-15"^^xsd:date) && (?li+>tpch:shipdate > "1995-03-15"^^xsd:date) ) } order by desc (sum (?li+>tpch:lineextendedprice * (1 - ?li+>tpch:linediscount))) ?ord+>tpch:orderdate ]]>http://demo.openlinksw.com/tpchsoft/sparql