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": ""}
  ?NnN 684 potamogetonaceae =S      1938-08-11 POTAMOGETON IMo           aWBJ P.H. ESCHMEYER  Depth of Water: 3(2-4) ft Bottom: fibrous peat @l;N     ii+ D -84.39998    POTAMOGOETON AMPLIFOLIUS (2    42.76039 ^0?   
{"catalogNumber": "", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton amplifolius", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "P.H. Eschmeyer", "recordNumber": "684", "verbatimEventDate": "1938-08-11", "habitat": "Depth of Water: 3(2-4) ft Bottom: fibrous peat", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "42.76039", "decimalLongitude": "-84.39998", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}