@prefix this: <https://w3id.org/np/RA-UUHa8Dir4Rcm5PBkj17YJtLvpl-BX8yQjdYS8Jg8kk> .
@prefix sub: <https://w3id.org/np/RA-UUHa8Dir4Rcm5PBkj17YJtLvpl-BX8yQjdYS8Jg8kk/> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@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 mac: <https://w3id.org/spaces/mac/r/ontology/> .
@prefix npx: <http://purl.org/nanopub/x/> .

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

sub:assertion {
  mac:hasSurveillanceMethod a owl:ObjectProperty;
    dct:partOf mac:MAC-Ontology;
    rdfs:comment "Asserts the surveillance system or observational platform through which this real-world occurrence was documented (e.g., the GISAID EpiCoV platform).";
    rdfs:domain mac:RealWorldOccurrence;
    rdfs:label "has surveillance method";
    rdfs:range mac:ObservationalMethod .
}

sub:provenance {
  sub:assertion dct:created "2026-05-22"^^xsd:date;
    prov:wasAttributedTo orcid:0000-0001-8888-635X .
}

sub:pubinfo {
  this: dct:created "2026-05-26T12:32:10Z"^^xsd:dateTime;
    dct:creator orcid:0000-0001-8888-635X;
    dct:license <https://creativecommons.org/licenses/by/4.0/>;
    rdfs:label "Vocabulary term: mac:hasSurveillanceMethod" .
  
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD3w/IUb755GIzp3ueODYkgELhyq4Clygb5Kspge50xo+n8uC/IvXwi+ukRjEpdfX/JZ09yKUCJ2AMMr/QchrsP1Xhg9Q3fEZ4E12XqFd5jX00Qs0K5XZwjBaV8NdDTJW9I4gpcyh0cry7hSBAWHkXEkqbK+lQvR4UFAKejFq6u/wIDAQAB";
    npx:hasSignature "vZ9Plbz2TjTNwu7piOgNwSoODArgIB5Im/IW4TLuejWRXdaNpmo0c7ihjdgODzgYkZZsLhN/e+bcOwMm/huqKLS/tI3mfX91KXdEMH7+qa1H6T4ytG37J6RlZoN9XPTcM9NKuoMP24bY23CvZKUIww4Ap1X0SwO67ZF4nRgPZV8=";
    npx:hasSignatureTarget this:;
    npx:signedBy orcid:0000-0001-8888-635X .
}