@prefix dct: <http://purl.org/dc/terms/> .
@prefix orcid: <https://orcid.org/> .
@prefix this: <http://purl.org/np/RA9rICwPlZwr2PjRwmj7bf1hN0lz151g7DevLddkVyin0> .
@prefix sub: <http://purl.org/np/RA9rICwPlZwr2PjRwmj7bf1hN0lz151g7DevLddkVyin0#> .
@prefix schema: <https://schema.org/> .
@prefix bpmn: <http://dkm.fbk.eu/index.php/BPMN2_Ontology#> .
@prefix np: <http://www.nanopub.org/nschema#> .
@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#> .

<http://purl.org/np/RA9rICwPlZwr2PjRwmj7bf1hN0lz151g7DevLddkVyin0> a np:Nanopublication;
  np:hasAssertion sub:assertion;
  np:hasProvenance sub:provenance;
  np:hasPublicationInfo sub:pubInfo;
  npx:introduces sub:step;
  prov:generatedAtTime "2021-06-14T17:08:33.472576"^^xsd:dateTime;
  prov:wasAttributedTo orcid:0000-0000-0000-0000 .

sub:LinguisticSystem a schema:ComputerLanguage;
  rdfs:label "python";
  rdfs:seeAlso <https://www.wikidata.org/wiki/Q28865>;
  owl:versionInfo "3.7.9.final.0" .

sub:img a pplan:Variable;
  rdfs:comment "float";
  rdfs:label "img" .

sub:out1 a pplan:Variable;
  rdfs:comment "float";
  rdfs:label "out1" .

sub:step a bpmn:ScriptTask, pplan:Step;
  dct:description """@is_fairstep(label='Invert the grayscale image to get a negative')
def image_Gray2Negative(img:float) -> float:
    img_negative = PIL.ImageOps.invert(img)
    return img_negative
""";
  dct:language sub:LinguisticSystem;
  pplan:hasInputVar sub:img;
  pplan:hasOutputVar sub:out1;
  rdfs:label "Invert the grayscale image to get a negative" .

sub:assertion prov:generatedAtTime "2021-06-14T17:08:33.472576"^^xsd:dateTime .

sub:sig npx:hasAlgorithm "RSA";
  npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCv0G5BIY0o0/ONHMQIggW+QXHEUcQJpY0KT8sDouETxw576phhzXtm1MjbuWmBP7kgBlbyhhObr6+/wXbtcuaUlFPupbRtArO/N3C7rhadtd5ZKqyj8Je+ku8vt7DcfR3qBWyNxSGyUrVZaWfM+r1cr6X/CaT6KQqv+D9BWpyKZwIDAQAB";
  npx:hasSignature "LLyxch+LP5D/55TVnMs6Jry8j9JrBJpiaNESnBQ5z+YtxeJIckF7692Uk9HYky4w22fV0ClwZvj1NfQVuQuSHBQJUK5BmyBUlK1TOmYr787HB3JAEUID49E7EYdj23zxwXA3Hn1ebXNPLCRlX9hgRZl8PJWiRYlkJxRGrXLyArk=";
  npx:hasSignatureTarget <http://purl.org/np/RA9rICwPlZwr2PjRwmj7bf1hN0lz151g7DevLddkVyin0> .