{
    "key": "content",
    "type": "combo",
    "label": "Content",
    "strings": {
        "options": {
            "silage": "Silage",
            "manure": "Manure",
            "crop": "Crop",
            "grain": "Grain",
            "salt": "Salt",
            "cement": "Cement",
            "sand": "Sand"
        }
    }
}