OntoTrader: An Ontological Web Trading Agent Approach for Environmental Information Retrieval

Algorithm 4

(01) PREFIX eid: <http://acg.ual.es/soleres/tests/EIDOntology.owl#>

(02) PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

(03) SELECT DISTINCT ?EID__EID_eimID ?EID__VariableId

(04) WHERE  {

(05)  ?EID__EID_eid: EID_eimId ?EID__EID_eimID.

(06)  ?EID__EID_eid: EID_hasClassification ?EID__Classification.

(07)  ?EID__Classification eid: Classification_hasLayer ?EID__Layer.

(08)  ?EID__Layer eid:Layer_name ?EID__LayerName.

(09)  ?EID__Layer eid:Layer_hasVariable ?EID__Variable.

(10)   ?EID__Variable eid:Variable_id ?EID__VariableId.

(11)    ?EID__Variableeid:Variable_name ?EID__VariableName.

(12)   FILTER (regex(?EID__LayerName, ∖“Edaphic sectors∖”)).

(13)   FILTER (regex(?EID__VariableName, ∖“E6∖”)).

(14)  }

(15) ORDER BY ASC(?EID__EID_eimID)