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": ""}
j. carey  V8 M  CAREX bkc&z  VIRGINIA zd   X grayi       ` Thomas F. Wieboldt       o8 7773   -L^ z 1991-07-12    ?( Cyperaceae  Along Roanoke River bout 1.5 km up river from Watkins Bridge (Rt 746) ca 8 m W of Saxe (Charlotte Co), just above the confluence of Hunting Creek.  +a     R United States 
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "", "scientificNameAuthorship": "J. Carey", "genus": "Carex", "subgenus": "", "specificEpithet": "grayi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thomas F. Wieboldt", "recordNumber": "7773", "verbatimEventDate": "1991-07-12", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Virginia", "county": "", "municipality": "", "locality": "Along Roanoke River about 1.5 km up river from Watkins Bridge (Rt 746) ca 8 km W of Saxe (Charlotte Co), just above the confluence of Hunting Creek.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}