{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"array",
 "items":{"type":"object","required":["date","title","url","summary","related"],"additionalProperties":false,
  "properties":{"date":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$"},"title":{"type":"string","minLength":1},
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   "related":{"type":"array","items":{"type":"string"}}}}}