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": ""}
  y john h. ehlers      1715  _     ;Ez 1921-08-07  b ]8 Willd. Ei ALISMATALES  [ [SECON SHEET NO. 5365 ON AUG 3, 1933, SAME LOCATION + AT ALANSON] [!K. RATAJ 1968] 1282292                3 Michigan 
{"catalogNumber": "1282292", "order": "Alismatales", "family": "", "scientificName": "", "scientificNameAuthorship": "Willd.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "1715", "verbatimEventDate": "1921-08-07", "habitat": "", "occurrenceRemarks": "[second sheet No. 5365 on Aug 3, 1933, same location + at Alanson] [!K. Rataj 1968]", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}