@prefix this: <http://purl.org/np/RAY4ToM3TgFasdOYoibW8L_AIwo9PLmq8aBTjBtVoSoXk> .
@prefix sub: <http://purl.org/np/RAY4ToM3TgFasdOYoibW8L_AIwo9PLmq8aBTjBtVoSoXk#> .
@prefix schema: <https://schema.org/> .
@prefix bpmn: <http://dkm.fbk.eu/index.php/BPMN2_Ontology#> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix dc1: <http://purl.org/dc/terms/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix npx: <http://purl.org/nanopub/x/> .
@prefix pplan: <http://purl.org/net/p-plan#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix prov: <http://www.w3.org/ns/prov#> .

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

sub:assertion {
  sub:LinguisticSystem a schema:ComputerLanguage;
    rdfs:label "python";
    rdfs:seeAlso <https://www.wikidata.org/wiki/Q28865>;
    owl:versionInfo "3.8.3.final.0" .
  
  sub:image a pplan:Variable;
    rdfs:comment "None";
    rdfs:label "image" .
  
  sub:out1 a pplan:Variable;
    rdfs:comment "None";
    rdfs:label "out1" .
  
  sub:step dc1:description """@is_fairstep(label='Invert image')
def invert_image(image):    
    from PIL import Image, ImageOps
    im_inverted = ImageOps.invert(image.convert('RGB') ).convert('L')
    return im_inverted
""";
    dc1:language sub:LinguisticSystem;
    pplan:hasInputVar sub:image;
    pplan:hasOutputVar sub:out1;
    a bpmn:ScriptTask, pplan:Step;
    rdfs:label "Invert image" .
}

sub:provenance {
  sub:assertion prov:generatedAtTime "2021-04-30T15:30:06.316971"^^xsd:dateTime .
}

sub:pubInfo {
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCOqbrPT5RmzxsvRXGHZSAXPzeRLt9ogiosL3tcPKC0g5J8B1577lnJ3oVKSfD80lgPJdr9K671RazGL/mkZ/yu/uCNqne07Q9jd6OIAEi3fldiVfGK8ZDh43rGWRuG+BlvbZ1lZRFrWsURTKTpMgh0C6vJFRIMkWH6ImbZC5JbbQIDAQAB";
    npx:hasSignature "RW2XH1RqPKhDBGdhn0FVkyw3gWUEPWY3pdd9fDzmbFIBse8fq8JgzdwJ+6kSot6SPrBFpn31mKwuFIaAOFo95HhCrJtcSOAV/4l/tmz1Gzbh96VijIjAOSuj2wdFHew7KclCk9LAvL4woBuVYAYwqVqdXm3GwOXN36/1BKKO+cM=";
    npx:hasSignatureTarget this: .
  
  this: npx:introduces sub:step;
    prov:generatedAtTime "2021-04-30T15:30:06.316971"^^xsd:dateTime;
    prov:wasAttributedTo <https://orcid.org/0000-0001-7769-4272> .
}