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": ""}
     6 "PLENTIFUL"  $GW| Polygonum douglasii       kz6# Polygonum   J  caryophyllales -87.921238 U    1916-09-01 )U<     s.n.  ~< G    $ Michigan    1466099gOa - 
{"catalogNumber": "1466099", "order": "Caryophyllales", "family": "", "scientificName": "Polygonum douglasii", "scientificNameAuthorship": "", "genus": "Polygonum", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1916-09-01", "habitat": "", "occurrenceRemarks": "\"Plentiful\"", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-87.921238", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}