[
    {
        "property-id" "tag:staff@noreply.openkim.org,2014-05-21:property/elastic-constants-isothermal-cubic-crystal-npt" 
        "instance-id" 1 
        "short-name" {
            "source-value" [
                "bcc"
            ]
        } 
        "species" {
            "source-value" [
                "Si" 
                "Si"
            ]
        } 
        "a" {
            "source-value" 2.886751338839531 
            "source-unit" "angstrom" 
            "si-unit" "m" 
            "si-value" 2.886751338839531e-10
        } 
        "basis-atom-coordinates" {
            "source-value" [
                [
                    0.0 
                    0.0 
                    0.0
                ] 
                [
                    0.5 
                    0.5 
                    0.5
                ]
            ]
        } 
        "space-group" {
            "source-value" "Im-3m"
        } 
        "temperature" {
            "source-value" 0 
            "source-unit" "K" 
            "si-unit" "K" 
            "si-value" 0.0
        } 
        "cauchy-stress" {
            "source-value" [
                0 
                0 
                0 
                0 
                0 
                0
            ] 
            "source-unit" "GPa" 
            "si-unit" "kg / m s^2" 
            "si-value" [
                0.0 
                0.0 
                0.0 
                0.0 
                0.0 
                0.0
            ]
        } 
        "c11" {
            "source-value" 12877387.071960762 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.007335951700833398 
            "si-unit" "kg / m s^2" 
            "si-value" 1.287738707196076e+16
        } 
        "c12" {
            "source-value" -12827868.78188177 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.005187301137080673 
            "si-unit" "kg / m s^2" 
            "si-value" -1.282786878188177e+16
        } 
        "c44" {
            "source-value" 915268.4096902596 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.0018339841720862648 
            "si-unit" "kg / m s^2" 
            "si-value" 915268409690259.6
        } 
        "excess" {
            "source-value" 201307.9149294612 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.002593643296847452 
            "si-unit" "kg / m s^2" 
            "si-value" 201307914929461.2
        }
    } 
    {
        "property-id" "tag:staff@noreply.openkim.org,2014-04-15:property/bulk-modulus-isothermal-cubic-crystal-npt" 
        "instance-id" 2 
        "short-name" {
            "source-value" [
                "bcc"
            ]
        } 
        "species" {
            "source-value" [
                "Si" 
                "Si"
            ]
        } 
        "a" {
            "source-value" 2.886751338839531 
            "source-unit" "angstrom" 
            "si-unit" "m" 
            "si-value" 2.886751338839531e-10
        } 
        "basis-atom-coordinates" {
            "source-value" [
                [
                    0.0 
                    0.0 
                    0.0
                ] 
                [
                    0.5 
                    0.5 
                    0.5
                ]
            ]
        } 
        "space-group" {
            "source-value" "Im-3m"
        } 
        "temperature" {
            "source-value" 0 
            "source-unit" "K" 
            "si-unit" "K" 
            "si-value" 0.0
        } 
        "cauchy-stress" {
            "source-value" [
                0 
                0 
                0 
                0 
                0 
                0
            ] 
            "source-unit" "GPa" 
            "si-unit" "kg / m s^2" 
            "si-value" [
                0.0 
                0.0 
                0.0 
                0.0 
                0.0 
                0.0
            ]
        } 
        "isothermal-bulk-modulus" {
            "source-value" -4259450.163934259 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.004235413658192001 
            "si-unit" "kg / m s^2" 
            "si-value" -4259450163934258.0
        }
    }
]