[
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            ]
        } 
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            "si-unit" "m" 
            "source-unit" "angstrom" 
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            "source-unit" "K" 
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        } 
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            "source-value" "Im-3m"
        } 
        "basis-atom-coordinates" {
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                    0.0
                ] 
                [
                    0.5 
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                ]
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        } 
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            "si-unit" "kg / m s^2" 
            "source-unit" "GPa" 
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            ] 
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            ]
        } 
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            ]
        } 
        "instance-id" 1
    } 
    {
        "short-name" {
            "source-value" [
                "bcc"
            ]
        } 
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        } 
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            "source-value" "Im-3m"
        } 
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                ] 
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                ]
            ]
        } 
        "species" {
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                "Cu"
            ]
        } 
        "instance-id" 2
    }
]