{
  "$schema": "https://json-structure.org/meta/extended/v0/#",
  "$id": "https://api-evangelist.github.io/web-of-science-apis/json-structure/web-of-science-time-span-structure.json",
  "title": "TimeSpan",
  "description": "Date range for filtering",
  "type": "object",
  "properties": {
    "begin": {
      "type": "date",
      "description": "Start date in YYYY-MM-DD format"
    },
    "end": {
      "type": "date",
      "description": "End date in YYYY-MM-DD format"
    }
  }
}