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": ""}
 b 1390774       t POALES  texas  #w       ;d) carex umbellata    william r. carr U%M    10387 K4  DERICK B. POINDEXTER X42g     U| BASTROP 1990-04-04 tT*@O  300408N 971017W Y 
{"catalogNumber": "1390774", "order": "Poales", "family": "", "scientificName": "Carex umbellata", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Derick B. Poindexter", "recordedBy": "William R. Carr", "recordNumber": "10387", "verbatimEventDate": "1990-04-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Texas", "county": "Bastrop", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "300408N 971017W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}