{
  "chart_types": [
    "donut chart",
    "pie chart",
    "multiple donut chart",
    "multiple pie chart",
    "line graph",
    "multiple line graph",
    "spline graph",
    "multiple spline graph",
    "step line graph",
    "stepped line graph",
    "multiple step line graph",
    "sorted lines chart",
    "slope chart"
  ]
}