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": ""}
 Br3 4836  5 POLYGALA   r LOW OPEN GROUND.  MICHI GAN q50|   G2 carl o. g rassl  ?RD ann arbor, n.e. of hospital. 1932-06-08 5M/  fabales tKW     L. gcy   K3 United States 42.288712 S   8)? Polygala senega   1472807  ;L)   ^7k! W-83.726161    WASHTENAW n4+     * POLGALACEAE
{"catalogNumber": "1472807", "order": "Fabales", "family": "Polygalaceae", "scientificName": "Polygala senega", "scientificNameAuthorship": "L.", "genus": "Polygala", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Carl O. Grassl", "recordNumber": "4836", "verbatimEventDate": "1932-06-08", "habitat": "Low open ground.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Ann Arbor, N.E. of Hospital.", "decimalLatitude": "42.288712", "decimalLongitude": "-83.726161", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}