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  jPK     [leaves thin many of them 5-nerved; winter-buds coriaceous. Some leaves 5-nerved, looks like P. friesii] - EGV59  ?.   s  Q  united states  [P>y 5463    7r+9 1280605 potamogeton l    45.68818 :   john h.ehlers gY]       FRIESII     Cb2 emmet  L -84.7536 michigan  N:(q    
{"catalogNumber": "1280605", "order": "", "family": "Potamogetonaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "friesii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "5463", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "[leaves thin many of them 5-nerved; winter-buds coriaceous. Some leaves 5-nerved, looks like P. friesii] - EGV59", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Emmet", "municipality": "", "locality": "", "decimalLatitude": "45.68818", "decimalLongitude": "-84.7536", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}