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  "releaseDate": null,
  "binaryFileFormat": "Binary",
  "formatNote": null,
  "lastUpdatedDate": "19 Apr 2012",
  "formatProvenance": "This format can be identified via a container signature in DROID version 6 or later. The PRONOM database cannot currently represent container signatures.",
  "formatSourceDate": "03 Nov 2010",
  "formatDisclosure": "Full",
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  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Spreadsheet",
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      "identifierType": "MIME"
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      "identifierType": "PUID"
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      ],
      "provenance": "Ongoing Digital Preservation research."
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "ods",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "ots",
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  "relationships": [
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 382,
      "relatedFormatName": "ZIP Format",
      "relatedFormatPUID": "x-fmt/263"
    },
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      "relationshipType": "Has priority over",
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      "relatedFormatName": "OpenDocument Spreadsheet",
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