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": ""}
  0 Carex nigromarginata      nigromarginata vxz     U Cuba Landing,  N of I-40, just to N of Cuba Landing Marina, E of Tennessee River.   8 tennessee     POALES =   humphreys k K~S      % 1380578  Mct9 CHARLES T.# BRYSON   
{"catalogNumber": "1380578", "order": "Poales", "family": "", "scientificName": "Carex nigromarginata", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "nigromarginata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles T. Bryson", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Tennessee", "county": "Humphreys", "municipality": "", "locality": "Cuba Landing, N of I-40, just to N of Cuba Landing Marina, E of Tennessee River.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}