{
  "volume": [100],
  "places": [
    {"element": "A", "volumeRatio": 0.5},
    {"element": "B", "volumeRatio": 0.5},
    {"element": "C", "volumeRatio": 0.0}
  ],
  "transitions": [{
      "inputPlaces": [
        {
          "element": "A",
          "amount": 1
        },
        {
          "element": "B",
          "amount": 1
        } ],
      "outputPlaces": [
        {
          "element": "C",
          "amount": 1
        } ],
      "k": 1.0
    }]
}