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 epihydrus var. nuttallii )  Potamogetonaceae #  4761 >a5 P    @c, WALTER N. KOELZ var. `,uG    NUTTALLII FP   Ny o Co7ntact UM Herbarium alismatales F z.Q   [C no data    Em ONTARIO Canada f    1932-09-09 a~   (Cham. & Schltdl.) Fernald   5x     j.O B epihydrus  nA potamogeton  1194903 1%#    
{"catalogNumber": "1194903", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton epihydrus var. nuttallii", "scientificNameAuthorship": "(Cham. & Schltdl.) Fernald", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "epihydrus", "verbatimTaxonRank": "var.", "infraspecificEpithet": "nuttallii", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "4761", "verbatimEventDate": "1932-09-09", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "no data", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}