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": ""}
 N aiton   Evidently planted; high shrub. =%Ga  952R &  1951-07-07 K=  Old R.R. grade, E. end of N. edge, Wilmot Twp. 1   3u  Prunus nigra   - N ["PRESUMABLY PLANTED" FIDE FIELD NOTES, BUT IS NATIVE IN THIS AREA] 1675449 @A4K    BpGw rosales   x edward g. voss   sgP7 Cheboygan  .JQ nigra  MICHIGAN  =     I ROSACEAE  wC1 r Prunus  y@ United6 Sttes  
{"catalogNumber": "1675449", "order": "Rosales", "family": "Rosaceae", "scientificName": "Prunus nigra", "scientificNameAuthorship": "Aiton", "genus": "Prunus", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "952", "verbatimEventDate": "1951-07-07", "habitat": "Evidently planted; high shrub.", "occurrenceRemarks": "[\"Presumably planted\" fide field notes, but IS native in this area]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "Old R.R. grade, E. end of N. edge, Wilmot Twp.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}