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": ""}
a[nn] a[rbor], WwFbd   Pw 1884-08-01  LKF "3Â°-5Â°"     N -83.73083    WASHTENAW 1$   ~r; michigan  purpureum     UNITED STATES (J2+7   R~2_ asteraceae  X 1217463 sandy land. 64 2C   %I) (L.) E. E. LMONT        Gz= 229 
{"catalogNumber": "1217463", "order": "", "family": "Asteraceae", "scientificName": "", "scientificNameAuthorship": "(L.) E. E. Lamont", "genus": "", "subgenus": "", "specificEpithet": "purpureum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "229", "verbatimEventDate": "1884-08-01", "habitat": "Sandy land.", "occurrenceRemarks": "\"3\u00c2\u00b0-5\u00c2\u00b0\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "A[nn] A[rbor],", "decimalLatitude": "", "decimalLongitude": "-83.73083", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}