double_occupation_position.rq

#+ summary: Observations with more than one occupation position
#+ tags:
#+   - errorDetection

PREFIX qb: <http://purl.org/linked-data/cube#>
PREFIX cedarterms: <http://lod.cedar-project.nl/vocab/cedar#>
 
SELECT ?obs FROM <urn:graph:cedar-mini:release> WHERE {
       ?obs a qb:Observation.
       ?obs cedarterms:occupationPosition ?pos1 .
       ?obs cedarterms:occupationPosition ?pos2 .
       FILTER (?pos1 != ?pos2 && ?pos1 < ?pos2)
}