sub:assertion {
  sub:a a pplan:Variable ;
    rdfs:comment "float" ;
    rdfs:label "a" .
  sub:b a pplan:Variable ;
    rdfs:comment "float" ;
    rdfs:label "b" .
  sub:code schema:programmingLanguage "python 3.8.6" ;
    schema:text """@is_fairstep(label='Addition and subtraction', returns=(['http://www.example.org/distance', 'http://www.example.org/number'], None))
def another_step(a:float, b:float) -> Tuple[float, float]:
    \"\"\"This step returns an addition and a subtraction of its inputs\"\"\"
    return a + b, a - b
""" .
  sub:out1 a pplan:Variable , <http://www.example.org/distance> , <http://www.example.org/number> ;
    rdfs:comment "float" ;
    rdfs:label "out1" .
  sub:out2 a pplan:Variable ;
    rdfs:comment "float" ;
    rdfs:label "out2" .
  sub:step dct:description "This step returns an addition and a subtraction of its inputs" ;
    pplan:hasInputVar sub:a , sub:b ;
    pplan:hasOutputVar sub:out1 , sub:out2 ;
    a bpmn:ScriptTask , pplan:Step ;
    rdfs:label "Addition and subtraction" ;
    schema:SoftwareSourceCode sub:code .
}