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": ""}
   t POTAM|OGETON GRAMINEUS  8~ Potamogetonaceae L. r 2  ROBERTS L., SEC. 28, KOEHLER TP. eO 4W   -84.556816 @        =^ 1952-07-21    (hg ALISMATALES     u POTAMOGETON  EDWARD G. VOSS N e[p  common; submersed exc. floating lvs & infl. b    P*y=^ 1324 gramineus = Ols 
{"catalogNumber": "", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton gramineus", "scientificNameAuthorship": "L.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "gramineus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "1324", "verbatimEventDate": "1952-07-21", "habitat": "common; submersed exc. floating lvs & infl.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Roberts L., sec. 28, Koehler Tp.", "decimalLatitude": "", "decimalLongitude": "-84.556816", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}