steve@0: PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
steve@0: PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
steve@0: PREFIX owl: <http://www.w3.org/2002/07/owl#>
steve@0: PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
steve@0: PREFIX abc: <http://example.org/abc#>
steve@0: PREFIX seq: <http://example.org/seq#>
steve@0: PREFIX sia: <http://example.org/sia#>
steve@0: 
steve@0: CONSTRUCT { ?vte sia:dimVal _:dv .
steve@0: 			_:dv sia:dimension ?dim;
steve@0: 			     sia:value ?val}
steve@0: WHERE
steve@0: {
steve@0: 	?vte rdf:type sia:VectorTableElement .
steve@0: 	?vte sia:fromDatapoint ?datapoint1 .
steve@0: 	?vte sia:toDatapoint ?datapoint2 .
steve@0: 	?datapoint1 sia:dimVal ?dv1 .
steve@0: 	?dv1 sia:dimension ?dim .
steve@0: 	?dv1 sia:value ?val1 .
steve@0: 	?datapoint2 sia:dimVal ?dv2 .
steve@0: 	?dv2 sia:dimension ?dim .
steve@0: 	?dv2 sia:value ?val2 .
steve@0: 	BIND (?val2 - ?val1 AS ?val)
steve@0: }