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": ""}
  POTAMOGETON BERCHTOLDII /]      POTAMOGETONACEAE V[/   Q t black creek just n of riverview rd. (12 mi sw of grayling). t26n r05w, sec. 17 se1/4 nw1/4      Q# ANTON A. REZNICEK    1993-10-19 VW=    united states O   1"Assoc.: Potamogeton epihydris, Ludwig|a palustris, Polygonum amphibium, Polygonum punctatum" _;    QQ. 478   
{"catalogNumber": "", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton berchtoldii", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "", "recordNumber": "478", "verbatimEventDate": "1993-10-19", "habitat": "", "occurrenceRemarks": "\"Assoc.: Potamogeton epihydris, Ludwigia palustris, Polygonum amphibium, Polygonum punctatum\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Black Creek just N of Riverview Rd. (12 mi SW of Grayling). T26N R05W, Sec. 17 SE1/4 NW1/4", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}