{
  "name": "PRAFWHEN",
  "label": "Period of Service",
  "predicateType": "int",
  "group": "N/A",
  "limit": 0,
  "suggested-weight": "PWVETWGT",
  "values": {
    "item": {
      "-1": "Not in Universe",
      "-3": "Refusal",
      "3": "May 1975 to July 1990",
      "7": "January 1947 to June 1950",
      "2": "August 1990 to August 2001",
      "-2": "Don't Know",
      "9": "November 1941 or earlier",
      "5": "February 1955 to July 1964",
      "8": "World War II (December 1941 to December 1946)",
      "4": "Vietnam era (Aug 1964 to Apr 1975)",
      "6": "Korean War (July 1950 to January 1955)",
      "1": "September 2001 or later"
    }
  }
}