{
  "age_group": [
    "20s",
    "30s",
    "40s",
    "50s"
  ],
  "gender": [
    "M",
    "F"
  ],
  "region": [
    "Tokyo",
    "Chiba",
    "Saitama"
  ],
  "occupation": [
    "Sales",
    "Engineer",
    "Admin"
  ],
  "disease_a": [
    0,
    1
  ],
  "disease_b": [
    0,
    1
  ]
}