{
    "property-id" "tag:staff@noreply.openkim.org,2014-04-15:property/cohesive-potential-energy-hexagonal-crystal"
    "instance-id" 1
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        "source-value" "P6_3/mcm"
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    "species" {
        "source-value" [
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            "Er"
            "Er"
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            "Sn"
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            "Sn"
            "Sn"
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        ]
    }
    "a" {
        "source-value" 8.88767826267
        "source-unit" "angstrom"
    }
    "c" {
        "source-value" 6.49573575
        "source-unit" "angstrom"
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    "cohesive-potential-energy" {
        "source-value" 5.065962185
        "source-unit" "eV"
    }
}