@prefix this: <https://w3id.org/np/RA0M9rmB7L0TLdBh9uSp8JbHzeLnIBjWQpTsSq7iMKQDs> .
@prefix sub: <https://w3id.org/np/RA0M9rmB7L0TLdBh9uSp8JbHzeLnIBjWQpTsSq7iMKQDs#> .
@prefix schema: <https://schema.org/> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix orcid: <https://orcid.org/> .
@prefix fip: <https://w3id.org/fair/fip/terms/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix npx: <http://purl.org/nanopub/x/> .

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

sub:assertion {
  sub:declaration a fip:FIP-Declaration;
    schema:version "1.0.0";
    fip:considerations "DDI is the most common metadata schema for survey data";
    fip:declared-by <https://w3id.org/np/RAM_kWZRB25Lh9JXPSKo8KBd_womXIb2rW1sJ2jjyb8As#ODISSEI-Portal-Community>;
    fip:declares-current-use-of <http://purl.org/np/RAh3tbu1Z7qqVD6Ool77Mp6FjoJk7scRTD_-I3ufWZpng#DDI-Codebook>;
    fip:refers-to-question fip:FIP-Question-F2 .
}

sub:provenance {
  sub:assertion dct:creator orcid:0000-0001-8772-7904 .
}

sub:pubinfo {
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB";
    npx:hasSignature "bKVPdgcQiY974H6QXd3XyQRCA70oQt8gT5s5Dpc7UQVC8FXyHwDroMa4R2dFfn89gNJfTS272NOjZYxpM54wvCr+woqzEGf7zsMvmDR7F9NT4mMRcBx9+R7VfThFbxZpohWdixY7hWbJROXTrY4bS+dpFOJn5EG5pl/V6Gi8hzs=";
    npx:hasSignatureTarget this: .
  
  this: dct:created "2025-04-16T12:24:57Z"^^xsd:dateTime;
    dct:creator <https://fip-wizard.ds-wizard.org/wizard>;
    dct:license <https://creativecommons.org/publicdomain/zero/1.0/>;
    prov:wasDerivedFrom <https://w3id.org/fip/wizard/f1b58de1-ff1f-4970-ac8d-e5cd9975ddff> .
}