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": ""}
        hillsdale ;;   f fraxinus nigra    n.z  1220117   AKC -84.53251      k.&/ michigan    [ united statGes  HM 607 nigra yf<0:   1988-06-05  oJD  
{"catalogNumber": "1220117", "order": "", "family": "", "scientificName": "Fraxinus nigra", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "607", "verbatimEventDate": "1988-06-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Hillsdale", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-84.53251", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}