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": ""}
 michigan ZU    .5b 6270   V John H. Ehlers United States R|Ns0     near fairy island, douglas lake 8E!    G michx.  sl AMERICANA  Vallisneria americana It wq     alismatales  ^:xT  Vallisneria q  cheboygan i%J,0   1937-08-(19 9+; f  1304691 mIM*    H@ -84.709299
{"catalogNumber": "1304691", "order": "Alismatales", "family": "", "scientificName": "Vallisneria americana", "scientificNameAuthorship": "Michx.", "genus": "Vallisneria", "subgenus": "", "specificEpithet": "americana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "6270", "verbatimEventDate": "1937-08-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "Near Fairy Island, Douglas Lake", "decimalLatitude": "", "decimalLongitude": "-84.709299", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}