construct-used-nothing.sparql

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# following statement:
#
# This software was developed at the National Institute of Standards
# and Technology by employees of the Federal Government in the course
# of their official duties. Pursuant to Title 17 Section 105 of the
# United States Code, this software is not subject to copyright
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CONSTRUCT
{
  # Augment PROV Activities with explicit no-input declarations.
  ?nAction prov:used prov:EmptyCollection .
}
WHERE {
  ?nAction
    a case-investigation:InvestigativeAction ;
    .

  FILTER NOT EXISTS {
    ?nAction
      uco-action:object ?nInput ;
      .
  }
}