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": ""}
  CALYSTEGIA rIS,R  -83.91671 LBS   Xc BORDER OF SEC. 29 & 30, T13N, R5E.    Bq calystegia sepium  if7 2 43.50116  united states OK      sepium 2   _m+ sagina Frederick W. Case, Jr. oK~       michigan  12     
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Calystegia sepium", "scientificNameAuthorship": "", "genus": "Calystegia", "subgenus": "", "specificEpithet": "sepium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frederick W. Case, Jr.", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Saginaw", "municipality": "", "locality": "Border of Sec. 29 & 30, T13N, R5E.", "decimalLatitude": "43.50116", "decimalLongitude": "-83.91671", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}