{
    "property-id" "tag:staff@noreply.openkim.org,2014-04-15:property/configuration-nonorthogonal-periodic-3d-cell-fixed-particles-fixed" 
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        ] 
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        "source-unit" "angstrom" 
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    "unrelaxed-configuration-forces" {
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        "source-unit" "eV/angstrom" 
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}