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": ""}
   b1 20.1959    rosales  >/M     f Potentilla      X 1901-07-20 3048 H  1184693 nl    Hidalgo hFL   c -98.7036    7d $ 8549 R. Williams V     SUMMIT LEDGES L7ew  
{"catalogNumber": "1184693", "order": "Rosales", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Potentilla", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "R. Williams", "recordedBy": "", "recordNumber": "8549", "verbatimEventDate": "1901-07-20", "habitat": "Summit ledges", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Hidalgo", "county": "", "municipality": "", "locality": "", "decimalLatitude": "20.1959", "decimalLongitude": "-98.7036", "verbatimCoordinates": "", "minimumElevationInMeters": "3048", "maximumElevationInMeters": ""}