@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix this: <http://purl.org/np/RACUvM9eTKpyQu-c3AcJy2L94Dr_aTN3r5NRgnYkzN738> .
@prefix sub: <http://purl.org/np/RACUvM9eTKpyQu-c3AcJy2L94Dr_aTN3r5NRgnYkzN738#> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix nt: <https://w3id.org/np/o/ntemplate/> .
@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#> .

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

sub:assertion {
  dcterms:description rdfs:label "has the description" .
  
  dcterms:publisher rdfs:label "is published by" .
  
  sub:assertion a nt:AssertionTemplate;
    rdfs:label "Describing a knowledge graph about COVID-19";
    nt:hasStatement sub:st01, sub:st02, sub:st03, sub:st04, sub:st05, sub:st06, sub:st07,
      sub:st08 .
  
  sub:citation a nt:UriPlaceholder;
    rdfs:label "URI of publication" .
  
  sub:description a nt:LiteralPlaceholder;
    rdfs:label "description of the dataset" .
  
  sub:endpoint a nt:UriPlaceholder;
    rdfs:label "SPARQL endpoint URL" .
  
  sub:kg a nt:UriPlaceholder;
    rdfs:label "URI of the knowledge graph" .
  
  sub:name a nt:LiteralPlaceholder;
    rdfs:label "name of the dataset" .
  
  sub:publisher a nt:UriPlaceholder;
    rdfs:label "URI of the publisher of the dataset" .
  
  sub:source a nt:UriPlaceholder;
    rdfs:label "entity from which the knowledge graph was derived" .
  
  sub:st01 rdf:object <http://www.w3.org/ns/dcat#Dataset>;
    rdf:predicate rdf:type;
    rdf:subject sub:kg .
  
  sub:st02 rdf:object sub:name;
    rdf:predicate rdfs:label;
    rdf:subject sub:kg .
  
  sub:st03 rdf:object sub:description;
    rdf:predicate dcterms:description;
    rdf:subject sub:kg .
  
  sub:st04 a nt:OptionalStatement;
    rdf:object sub:publisher;
    rdf:predicate dcterms:publisher;
    rdf:subject sub:kg .
  
  sub:st05 rdf:object sub:url;
    rdf:predicate <http://schema.org/url>;
    rdf:subject sub:kg .
  
  sub:st06 a nt:OptionalStatement;
    rdf:object sub:citation;
    rdf:predicate <http://purl.org/spar/cito/citesAsAuthority>;
    rdf:subject sub:kg .
  
  sub:st07 a nt:OptionalStatement;
    rdf:object sub:source;
    rdf:predicate prov:wasDerivedFrom;
    rdf:subject sub:kg .
  
  sub:st08 a nt:OptionalStatement;
    rdf:object sub:endpoint;
    rdf:predicate <http://www.w3.org/ns/sparql-service-description#endpoint>;
    rdf:subject sub:kg .
  
  sub:url a nt:LiteralPlaceholder;
    rdfs:label "URL of the knowledge graph" .
  
  <http://purl.org/spar/cito/citesAsAuthority> rdfs:label "has authoritative citation" .
  
  <http://schema.org/url> rdfs:label "has the URL" .
  
  rdf:type rdfs:label "is a" .
  
  rdfs:label rdfs:label "is called" .
  
  <http://www.w3.org/ns/dcat#Dataset> rdfs:label "dataset" .
  
  prov:wasDerivedFrom rdfs:label "was derived from" .
  
  <http://www.w3.org/ns/sparql-service-description#endpoint> rdfs:label "has SPARQL endpoint" .
}

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

sub:pubinfo {
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB";
    npx:hasSignature "Sr+klkcTXd0nyDrT9W6WKkqh1MhO18em8r1k6yeradfQWJU1PFlxsAioPgH8TftLwjFzcDEZGX/2VNQy9Z7hBxrANll8E+UCeTM7FAgAUn38y5d77lcNDE9hhGHHe3MunnSXu6Wi2+K5/qtRh4ChhxOuhKJCEaDXUSxP0QtNjv8=";
    npx:hasSignatureTarget this: .
  
  this: dcterms:created "2021-05-20T17:57:12.384+02:00"^^xsd:dateTime;
    dcterms:creator orcid:0000-0002-1267-0234;
    npx:supersedes <http://purl.org/np/RAGvYS0Mxm5W33T_X8Jvet8SQF2zvKSTUJH64ywMRgNoY>;
    nt:wasCreatedFromProvenanceTemplate <http://purl.org/np/RANwQa4ICWS5SOjw7gp99nBpXBasapwtZF1fIM3H2gYTM>;
    nt:wasCreatedFromPubinfoTemplate <http://purl.org/np/RAA2MfqdBCzmz9yVWjKLXNbyfBNcwsMmOqcNUxkk1maIM>,
      <http://purl.org/np/RAjpBMlw3owYhJUBo3DtsuDlXsNAJ8cnGeWAutDVjuAuI>;
    nt:wasCreatedFromTemplate <http://purl.org/np/RALLkvoulW5DSScfQ2gDQzki9-8Tl-xV9MCmW7btOTHEM> .
}