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

Algorithm 7

(01)  PREFIX rdf: <http:// …/02/22-rdf-syntax-ns#>

(02) SELECT DISTINCT ? EID__ClassificationId

(03) WHERE  {

(04)  ?EID__EID  eid:EID_eimId ?EID__ EID_eimID.

(05)  ?EID__EID  eid:EID_hasClassification ?EID_Classification.

(06)  ?EID__Classificationeid:Classification_id ?EID__ClassificationId.

(07)  ?EID__Classification eid:Classification_hasGeography ?EID__Geography.

(08)  ?EID__Geography eid:Geography_towns?EID__GeographyTown.

(09)  ?EID__Classification eid:Classification_hasLayer ?EID__Layer.

(10)   ?EID__Layer eid:Layer_hasVariable ?EID__Variable.

(11)    ?EID__Variable eid:Variable_name ?EID__VariableName.

(12)   ?EID__Variable eid:Variable_id ?EID__VariableId.

(13)   FILTER (regex(?EID__GeographyTown, ∖“Granada and Almeria∖”)).

(14)   FILTER (regex(?EID__VariableName, ∖“^∧C∖”) ∣∣  regex(?EID__VariableName, ∖“^∧E∖”)).

(15)  }

(16) ORDER BY ASC(?EID__ClassificationId)