stevenh@32: PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
stevenh@32: PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
stevenh@32: PREFIX owl: <http://www.w3.org/2002/07/owl#>
stevenh@32: PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
stevenh@32: PREFIX abc: <http://example.org/abc#>
stevenh@32: PREFIX seq: <http://example.org/seq#>
stevenh@32: PREFIX sia: <http://example.org/sia#>
stevenh@32: 
stevenh@32: CONSTRUCT { _:vte rdf:type sia:VectorTableElement;
stevenh@32: 			sia:fromDatapoint ?datapoint1;
stevenh@32: 			sia:toDatapoint ?datapoint2}
stevenh@32: WHERE
stevenh@32: {
stevenh@32:  	?datapoint1 sia:memberOfOrderedSet ?bnode .
stevenh@32:  	?datapoint2 sia:memberOfOrderedSet ?bnode .
stevenh@32: 	?bnode a sia:OrderedSet .
stevenh@32: 	?datapoint1 sia:orderedIndex ?i1 .
stevenh@32: 	?datapoint2 sia:orderedIndex ?i2
stevenh@32: }
stevenh@32: GROUP BY ?datapoint1 ?datapoint2