{
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    "time": "http://www.w3.org/2006/time#",
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    "vcard": "http://www.w3.org/2006/vcard/ns#",
    "voaf": "http://purl.org/vocommons/voaf#",
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      "gnss:igsModelCode": "TRIMBLE 4700"
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      "gnss:marker-arpEastEcc": {
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      "gnss:marker-arpNorthEcc": {
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      "gnss:marker-arpUpEcc": {
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        "@value": "0.0"
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    {
      "@id": "https://epncb.oma.be/PID/2007/058/EIJS00NLD_2007058_01D_30S_R2#obsdata",
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      "gnss:format": {
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}