{
    "key": "substance",
    "type": "combo",
    "label": "Substance",
    "strings": {
        "options": {
            "fuel": "Fuel",
            "gas": "Natural Gas",
            "hot_water": "Hot Water",
            "oil": "Crude Oil",
            "rainwater": "Rainwater",
            "sewage": "Sewage",
            "water": "Drinking Water"
        }
    }
}