{
  "name": "DP4_C21A",
  "label": "Annotation of Percent!!Total housing units!!YEAR STRUCTURE BUILT!!1999 to March 2000",
  "predicateType": "string",
  "group": "DP4",
  "limit": 0,
  "attribute of": "DP4_C21",
  "attribute type": "Annotation"
}