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": ""}
 United States  J-Z  Study material. Rays white 16-22 in number. K   "Point Nipigon" Roadside Park. W of northernmost creek crossing outside Cheboygan on US23. $    2006-10-23 H     (a. gray) g. l. nesom &/K/   Db PILOSUM  ANTON A. REZNICEK  .X   N 06:52   z~ pringlei  coz8 cheboygan      r4PV8 symphyotrichum  1513850 6ATg   X! Michiga     SYMPHYOTRICHUM PILOSUM VAR. PINGLEI 
{"catalogNumber": "1513850", "order": "", "family": "", "scientificName": "Symphyotrichum pilosum var. pringlei", "scientificNameAuthorship": "(A. Gray) G. L. Nesom", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "pilosum", "verbatimTaxonRank": "", "infraspecificEpithet": "pringlei", "identifiedBy": "Anton A. Reznicek", "recordedBy": "", "recordNumber": "06:52", "verbatimEventDate": "2006-10-23", "habitat": "", "occurrenceRemarks": "Study material. Rays white 16-22 in number.", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "\"Point Nipigon\" Roadside Park. W of northernmost creek crossing outside Cheboygan on US23.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}