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": ""}
1921-05-31 d     (l.) dc. 6   JOHN H. EHLERS OOW.   X_ APIACEAE   n 1477  WASHTENAW x    nbK 42.272899   Apiales Z5    S!j CANAD3NSIS  o~^ -83.768386     United States  7@  Cryptotaenia canad3nsis BFS:q   
{"catalogNumber": "", "order": "Apiales", "family": "Apiaceae", "scientificName": "Cryptotaenia canadensis", "scientificNameAuthorship": "(L.) DC.", "genus": "", "subgenus": "", "specificEpithet": "canadensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "1477", "verbatimEventDate": "1921-05-31", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Washtenaw", "municipality": "", "locality": "", "decimalLatitude": "42.272899", "decimalLongitude": "-83.768386", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}