Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
contact um herbarium bs%4  Juncus castaneus subsp. castaneus t 6   2208 e/    / Juncus  SM. F K     _z~ai ALASKA  na united states y. mexia      _-Tn 1447790  ] -x POALE          CX castaneus CASTANEUS |ZNpb   ds| subsp.  I Juncaceae
{"catalogNumber": "1447790", "order": "Poales", "family": "Juncaceae", "scientificName": "Juncus castaneus subsp. castaneus", "scientificNameAuthorship": "Sm.", "genus": "Juncus", "subgenus": "", "specificEpithet": "castaneus", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "castaneus", "identifiedBy": "", "recordedBy": "Y. Mexia", "recordNumber": "2208", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Alaska", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}