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 4  near st. charles.  Foap   rumex      _GGX Caryophyllales  rumex verticillatus M]d      0f S.N.  p l.     1956-07-17 yQ     %/ 1471481    E Frederick W. Case, Jr. v :@ASF SAGINAW VER7ICILLA7US *b@R  Michigan :  
{"catalogNumber": "1471481", "order": "Caryophyllales", "family": "", "scientificName": "Rumex verticillatus", "scientificNameAuthorship": "L.", "genus": "Rumex", "subgenus": "", "specificEpithet": "verticillatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frederick W. Case, Jr.", "recordNumber": "s.n.", "verbatimEventDate": "1956-07-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Saginaw", "municipality": "", "locality": "Near St. Charles.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}