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": ""}
 [SPECIMEN IN BOUND NATHAN J. STONE HERBARIUM, NO. 19] So    Viola sororia a        Z&jy calhoun  h low shady soil  yq 1491728 1893-05-26O0aX      united states H   H viola  MICHIGAN fp>[   1.2 mi W of Albion d/FKo     NATHAN J. STONE  >0 
{"catalogNumber": "1491728", "order": "", "family": "", "scientificName": "Viola sororia", "scientificNameAuthorship": "", "genus": "Viola", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Nathan J. Stone", "recordNumber": "", "verbatimEventDate": "1893-05-26", "habitat": "low shady soil", "occurrenceRemarks": "[Specimen in bound Nathan J. Stone Herbarium, no. 19]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Calhoun", "municipality": "", "locality": "1.2 mi W of Albion", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}