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": ""}
  23 ( along thepotomac river at piscataway park just east of mockley point.  xB carex   Poales T  Carex grayi y   )U B. Steury  UNITED STATES GsD0   Cyperaceae t     Prince George's KO~u    &M 1995-05-29  ssZL Maryland  P2 J. Carey  grayi FPDT    `I! 2905951    1372153  ?n!  
{"catalogNumber": "1372153", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex grayi", "scientificNameAuthorship": "J. Carey", "genus": "Carex", "subgenus": "", "specificEpithet": "grayi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "B. Steury", "recordNumber": "2905951", "verbatimEventDate": "1995-05-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Maryland", "county": "Prince George's", "municipality": "", "locality": "Along the Potomac River at Piscataway Park just east of Mockley Point.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}