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": ""}
      4887  y R.Br. FLORIDA m0    fabales [IKD>   MELANOXYLON k_#       CONTACT UM HERBARIUM _E  1931-04-20 8  james b. mcfarlin 8   united states !ck0  acacia D*  1199252 mJ   fabaceae n    ACACIA MELANOXYLON  hBjy 
{"catalogNumber": "1199252", "order": "Fabales", "family": "Fabaceae", "scientificName": "Acacia melanoxylon", "scientificNameAuthorship": "R.Br.", "genus": "Acacia", "subgenus": "", "specificEpithet": "melanoxylon", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "James B. McFarlin", "recordNumber": "4887", "verbatimEventDate": "1931-04-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Florida", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}