{ "$schema":                              "https://json-schema.org/draft/2020-12/schema",
  "$id":                                  "https://schemas.mpai.community/OSD/V1.5/data/BasicSpeechSceneGeometry.json",
  "title":                                "Basic 3D Model Scene Geometry V1.5", 
  "type":                                 "object", 
  "additionalProperties":                 false, 
  "required":                             [ "Header", "BasicSpeechSceneGeometryID", "BasicSpeechSceneGeometrySpaceTime", 
                                            "SpeechObjectCount", "SpeechObjects" ], 
  "properties":                           {

    "Header":                             { "type": "string", "pattern": "^OSD-B3G-V[0-9]{1,2}[.][0-9]{1,2}$" },
    "MInstanceID":                        { "type": "string" },
    "UEnvironmentID":                     { "type": "string" },
    "BasicSpeechSceneGeometryID":         { "type": "string" },
    "BasicSpeechSceneGeometrySpaceTime":  { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },

    "SpeechObjectCount":                  { "type": "integer", "minimum": 0 },
    "SpeechObjects":                      { "type": "array", "minItems": 0, "items": { "type": "object", "additionalProperties": false,
                                            "required": [ "SpeechObjectSpaceTime", "SpeechObjectQualifier" ], "properties": {
      "SpeechObjectSpaceTime":            { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
      "SpeechObjectQualifier":            { "$ref": "https://schemas.mpai.community/TFA/V1.5/data/SpeechQualifier.json" } } } },

    "DataXMData":                         { "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json" },
    "DescrMetadata":                      { "type": "string", "maxLength": 2048 } } }