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": ""}
4946 yw    d carex grayi Frederick J. Hermann 7xU.R     4OzX oliver a. farwell  1918-06-16 r        ^,L -83.2535           GRAYI !   w r] MONROE CYPERACEAE   
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "Carex grayi", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "grayi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Frederick J. Hermann", "recordedBy": "Oliver A. Farwell", "recordNumber": "4946", "verbatimEventDate": "1918-06-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Monroe", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-83.2535", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}