[
  {
    "name": "warsaw",
    "latitude": 52.24,
    "longitude": 21.02
  },
  {
    "name": "berlin",
    "latitude": 52.52,
    "longitude": 13.40
  },
  {
    "name": "chicago",
    "latitude": 41.88,
    "longitude": -87.62
  },
  {
    "name": "vancouver",
    "latitude": 49.25,
    "longitude": -123.12
  },
  {
    "name": "tokyo",
    "latitude": 35.65,
    "longitude": 139.84
  }
]