[
  {
    "name": "trace1",
    "labels": [
      "US",
      "China",
      "European Union",
      "Russian Federation",
      "Brazil",
      "India",
      "Rest of World"
    ],
    "domain": {
      "column": 0
    },
    "hoverinfo": "label+percent+name",
    "hole": 0.4,
    "type": "pie"
  },
  {
    "labels": [
      "US",
      "China",
      "European Union",
      "Russian Federation",
      "Brazil",
      "India",
      "Rest of World"
    ],
    "text": "CO2",
    "textposition": "inside",
    "domain": {
      "column": 1
    },
    "name": "trace2",
    "hoverinfo": "label+percent+name",
    "hole": 0.4
  }
]