{
    "IfcClassification": {
        "Specification": "Location"
    },
    "IfcPropertyBoundedValue": {
        "Specification": "Description"
    },
    "IfcPropertyEnumeratedValue": {
        "Specification": "Description"
    },
    "IfcPropertyListValue": {
        "Specification": "Description"
    },
    "IfcPropertyReferenceValue": {
        "Specification": "Description"
    },
    "IfcPropertyTableValue": {
        "Specification": "Description"
    },
    "IfcPropertySingleValue": {
        "Specification": "Description"
    },
    "IfcComplexProperty": {
        "Specification": "Description"
    },
    "IfcWorkTime": {
        "StartDate": "Start",
        "FinishDate": "Finish"
    }
}