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": ""}
 d M 1932-09-06   ZIO var.    68G4f potamogeton  7 pihydrus   .H$*. 1194901 Contact VM Herbarium F#      , qrP CANADA Ontario %   Potamogetonaceae O    nuttallii yb     FKW POTAMOGETON EPIHYDRUS VAR. NUTTALLII  Alismatales ~%u   4739 -M  
{"catalogNumber": "1194901", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton epihydrus var. nuttallii", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "epihydrus", "verbatimTaxonRank": "var.", "infraspecificEpithet": "nuttallii", "identifiedBy": "", "recordedBy": "", "recordNumber": "4739", "verbatimEventDate": "1932-09-06", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}