Execution example::

  table_create Stations TABLE_HASH_KEY ShortText
  # [[0,0.0,0.0],true]
  column_create Stations location COLUMN_SCALAR WGS84GeoPoint
  # [[0,0.0,0.0],true]
  load --table Stations
  [
  ["_key", "location"],
  ["Tokyo", "128452975x503157902"],
  ]
  # [[0,0.0,0.0],1]
