@prefix this: <https://w3id.org/np/RA_IcmwsJjICvGpSudP3AgR9ckFFoNQh7m5m8-veaHSJM> .
@prefix sub: <https://w3id.org/np/RA_IcmwsJjICvGpSudP3AgR9ckFFoNQh7m5m8-veaHSJM/> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix npx: <http://purl.org/nanopub/x/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix orcid: <https://orcid.org/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .

sub:Head {
  this: a np:Nanopublication;
    np:hasAssertion sub:assertion;
    np:hasProvenance sub:provenance;
    np:hasPublicationInfo sub:pubinfo .
}

sub:assertion {
  sub:get-presentations-by-speaker a <https://w3id.org/kpxl/grlc/grlc-query>;
    dct:description "Returns all presentations by a given speaker, with label, date, event, and nanopub link.";
    dct:license <http://www.apache.org/licenses/LICENSE-2.0>;
    rdfs:label "Get presentations by speaker";
    <https://w3id.org/kpxl/grlc/endpoint> <https://w3id.org/np/l/nanopub-query-1.1/repo/type/3952cad1a6d2561f045d33e5e79c03e7264b0a492b8becf6c62656c596cf398c>;
    <https://w3id.org/kpxl/grlc/sparql> """prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix dct: <http://purl.org/dc/terms/>
prefix np: <http://www.nanopub.org/nschema#>
prefix npa: <http://purl.org/nanopub/admin/>
prefix npx: <http://purl.org/nanopub/x/>
prefix wd: <http://www.wikidata.org/entity/>

select ?presentation ?presentation_label ?date ?event ?event_label ?np (\"^\" as ?np_label) where {
  graph npa:graph {
    ?np npa:hasValidSignatureForPublicKeyHash ?pubkey .
    filter not exists { ?npx npx:invalidates ?np ; npa:hasValidSignatureForPublicKeyHash ?pubkey . }
    filter not exists { ?np npx:hasNanopubType npx:ExampleNanopub . }
    ?np dct:created ?npdate .
    ?np np:hasAssertion ?a .
    ?np npx:introduces ?presentation .
  }
  graph ?a {
    ?presentation a wd:Q604733 .
    ?presentation wd:P823 ?_speaker_iri .
    optional { ?presentation rdfs:label ?presentation_label . }
    optional { ?presentation dct:date ?date . }
    optional {
      ?presentation dct:isPartOf ?event .
      optional { ?event rdfs:label ?event_label . }
    }
  }
} order by desc(?date)""" .
}

sub:provenance {
  sub:assertion prov:wasAttributedTo orcid:0000-0002-1267-0234 .
}

sub:pubinfo {
  orcid:0000-0002-1267-0234 foaf:name "Tobias Kuhn" .
  
  this: dct:created "2026-03-17T12:11:35Z"^^xsd:dateTime;
    dct:creator orcid:0000-0002-1267-0234;
    dct:license <https://creativecommons.org/licenses/by/4.0/>;
    npx:introduces sub:get-presentations-by-speaker;
    rdfs:label "Get presentations by speaker" .
  
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB";
    npx:hasSignature "WwbDBfx3SsGuXWANOQR8oV46UosHf4xR/T5UHerOKCuVvNlgk8pX8B8TWR4F7j6m1agxCf1IWN20S74OsyfTSYfQQ4MK+qJy9okfcN+hBH90A048HZepicHvH9If62lPMNv1opc47kN3SuGovAvXIZ/8r+3TpGolUy6UHCjosAw=";
    npx:hasSignatureTarget this:;
    npx:signedBy orcid:0000-0002-1267-0234 .
}