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": ""}
  -x Calhoun       viola rostrata !r    pn dan j. skean, jr.   n 1247656  "FLOWERS PALE VIOLET, DARKER IN CENTER." g      wA X Viola    ROSTRATA O5    pY 2234  MICHIGAN *OS 
{"catalogNumber": "1247656", "order": "", "family": "", "scientificName": "Viola rostrata", "scientificNameAuthorship": "", "genus": "Viola", "subgenus": "", "specificEpithet": "rostrata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Dan J. Skean, Jr.", "recordNumber": "2234", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "\"Flowers pale violet, darker in center.\"", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Calhoun", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}