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": ""}
 TRS: T4S R28W sec 30N SW1/4 SE1/4 [        x 1986-04-15   Schwein. %y[3  POLK D $   Carex nigromarginata %    8 yS jeff h. rettig  3]T NIGROMARGINATA   1480 BC     cyperaceae A   poales GPONp   
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex nigromarginata", "scientificNameAuthorship": "Schwein.", "genus": "", "subgenus": "", "specificEpithet": "nigromarginata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Jeff H. Rettig", "recordNumber": "1480", "verbatimEventDate": "1986-04-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Polk", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "TRS: T4S R28W sec 30 SW1/4 SE1/4", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}