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": ""}
  KR@:x harry e. ahles & james a. duke  S. F. Gray Ttx?   1 UNITED STATES    L a POLYGONACEAE  PERSICARIA MACULOSA o     )k north carolina  /S<4 maculosa      /o CONTACT UM HERBARIUM   p. Kv 1439197    persicaia CDc   caryophyllales V 
{"catalogNumber": "1439197", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Persicaria maculosa", "scientificNameAuthorship": "S. F. Gray", "genus": "Persicaria", "subgenus": "", "specificEpithet": "maculosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Harry E. Ahles & James A. Duke", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "North Carolina", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}