{
    "test": [
        "chr4",
        "chr11",
        "chr12",
        "chr15",
        "chrY"
    ],
    "valid": [
        "chr22",
        "chr7"
    ],
    "train": [
        "chr1",
        "chr2",
        "chr3",
        "chr5",
        "chr6",
        "chr8",
        "chr9",
        "chr10",
        "chr13",
        "chr14",
        "chr16",
        "chr17",
        "chr18",
        "chr19",
        "chr20",
        "chr21",
        "chrX"
    ]
}