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": ""}
  UNITED STATS z   1474349 9o   ;W L. HILLSDALE bX    -84.63769 `   AHs&e 1937-06-28   Araceae 1   l<BJV LEMNA [Root caps pointed] [L. minor, E.H. Daubs 1961] *8V8    MICHIGAN [  31 :.  LEMNA MINOR %     Alismatales `   E. LANDOLT h/k  
{"catalogNumber": "1474349", "order": "Alismatales", "family": "Araceae", "scientificName": "Lemna minor", "scientificNameAuthorship": "L.", "genus": "Lemna", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "", "recordNumber": "31", "verbatimEventDate": "1937-06-28", "habitat": "", "occurrenceRemarks": "[Root caps pointed] [L. minor, E.H. Daubs 1961]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Hillsdale", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-84.63769", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}