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": ""}
vernonia missurica myWlK  1917-08-18 TQM   asteraceae n    raf. n~   x= CHARLES K. DODGE  Pw asterales United States o       berrien   Yna  vernonia 6     Sv84  NORTH OF BENTON HARBOR  a Damp open ground     y4_ MICHIGAN  
{"catalogNumber": "", "order": "Asterales", "family": "Asteraceae", "scientificName": "Vernonia missurica", "scientificNameAuthorship": "Raf.", "genus": "Vernonia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles K. Dodge", "recordNumber": "", "verbatimEventDate": "1917-08-18", "habitat": "Damp open ground", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Berrien", "municipality": "", "locality": "north of Benton Harbor", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}