@prefix this: <http://purl.org/np/RAkDu_AmfOQdIrjGM2dqJXmJYyxwMfle6UPhsgXFgCLdE> .
@prefix sub: <http://purl.org/np/RAkDu_AmfOQdIrjGM2dqJXmJYyxwMfle6UPhsgXFgCLdE#> .
@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 "3.7.9.final.0" .
  
  sub:img a pplan:Variable;
    rdfs:comment "None";
    rdfs:label "img" .
  
  sub:out1 a pplan:Variable;
    rdfs:comment "None";
    rdfs:label "out1" .
  
  sub:step dc1:description """@is_fairstep(label='Make white background of image transparent')
def white_to_transparency(img):
    from PIL import Image
    img = img.convert(\"RGBA\")
    data = img.getdata()
    new_data = []
    for item in data:
        if item[0] == 255 and item[1] == 255 and item[2] == 255:
            new_data.append((255, 255, 255, 0))
        else:
            new_data.append(item)
    img.putdata(new_data)
    return img
""";
    dc1:language sub:LinguisticSystem;
    pplan:hasInputVar sub:img;
    pplan:hasOutputVar sub:out1;
    a bpmn:ScriptTask, pplan:Step;
    rdfs:label "Make white background of image transparent" .
}

sub:provenance {
  sub:assertion prov:generatedAtTime "2021-06-14T16:48:49.987039"^^xsd:dateTime .
}

sub:pubInfo {
  sub:assertion prov:wasDerivedFrom <http://purl.org/np/RArWETwZLOap_HslX7aZOrOeUGNGQUU4kxFhzHbn74rB4> .
  
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCtTQ1JpnqX5lUuxCZ5ZLa8Jm0a81WWoAxef6EyIhOTFrX9MTS8tEHWgGteg7UEO6DFj2vqRVa5iM9C9qPy9HzRF/6gXJp3y+3prm/N8uGExPcOTpho4nak9eDraN+AjM/BbFJy3DuJMVfW1EtEJcuPU3UNtbnb8QrNbbfIdBwS7QIDAQAB";
    npx:hasSignature "VZDUlyfWPulMXNPOPegV4BZfbtFxegZaWKqvENvxeTPmoueuF4vRZRVhf8H5fd5STGF7iC7HUata4Rq64A1sAHUFOsB0MUz3Sj8UmwHPUP6gyCbQnY6ASqy24jNt1kZ+qjdi6W1vMnnxqpl21rwKTXQrhUEkxLHg9t8SX+t35xs=";
    npx:hasSignatureTarget this: .
  
  this: npx:introduces sub:step;
    prov:generatedAtTime "2021-06-14T16:48:49.987039"^^xsd:dateTime;
    prov:wasAttributedTo <https://orcid.org/0000-0000-0000-0000> .
}