sub:assertion {
  sub:get-newer-versions-of-np dct:description "This query returns all newer versions of a given nanopublication, including those that since have been superseded or retracted." ;
    dct:license <http://www.apache.org/licenses/LICENSE-2.0> ;
    a <https://w3id.org/kpxl/grlc/grlc-query> ;
    rdfs:label "Get all newer versions of this nanopublication" ;
    <https://w3id.org/kpxl/grlc/endpoint> <https://w3id.org/np/l/nanopub-query-1.1/repo/meta> ;
    <https://w3id.org/kpxl/grlc/sparql> """prefix np: <http://www.nanopub.org/nschema#>
prefix npa: <http://purl.org/nanopub/admin/>
prefix npx: <http://purl.org/nanopub/x/>
prefix dct: <http://purl.org/dc/terms/>

select ?newerVersion ?date ?retractedBy ?supersededBy where {
  graph npa:graph {
    ?_np_iri npa:hasValidSignatureForPublicKey ?pubkey .
  }
  graph npa:networkGraph {
    ?newerVersion (npx:supersedes)* ?_np_iri .
  }
  graph npa:graph {
    filter exists { ?newerVersion npa:hasValidSignatureForPublicKey ?pubkey . }
  }
  optional { graph npa:graph { ?newerVersion dct:created ?date . } }
  optional { graph npa:graph { ?retractedBy npx:retracts ?newerVersion ; npa:hasValidSignatureForPublicKey ?pubkey . } }
  optional { graph npa:graph { ?supersededBy npx:supersedes ?newerVersion ; npa:hasValidSignatureForPublicKey ?pubkey . } }
}
order by desc(?date) ?newerVersion""" .
}