Execution example::

  load --table Shops
  [
  {"_key": "Coffee Shop",         "from_station":  50},
  {"_key": "Donut & Coffee Shop", "from_station": 400},
  {"_key": "Cake & Coffee Shop",  "from_station": 200}
  ]
  # [[0, 1337566253.89858, 0.000355720520019531], 3]
