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": ""}
 Potamogetonaceae r      Potamogeton robbinsii ~M4  1281809 _   United States wBU     %tu 44.06249 1942-07-02 j      8 ROBBINSII      >&9 HAMLIN LAKE OAKES Z.N   potamogeton ga@F  R.D. VANDEUSEN 0v   -86M.445219  `L 
{"catalogNumber": "1281809", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton robbinsii", "scientificNameAuthorship": "Oakes", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "robbinsii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R.D. VanDeusen", "recordNumber": "", "verbatimEventDate": "1942-07-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Hamlin Lake", "decimalLatitude": "44.06249", "decimalLongitude": "-86.445219", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}