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": ""}
   1939-07-21 r,X      Elymus   poales  fP   u:T[o MICHIGAN  [p POACEAE   , Keweenaw   h -87.951876   B4 r 47.478326 united states a1  Oliver A. Farwell pZ_%    Ve&) ELYMUS TRACHYCAULUS   i r (livnk) gould ex shinners   sLZ trachycaulus  hebard park  `K  
{"catalogNumber": "", "order": "Poales", "family": "Poaceae", "scientificName": "Elymus trachycaulus", "scientificNameAuthorship": "(Link) Gould ex Shinners", "genus": "Elymus", "subgenus": "", "specificEpithet": "trachycaulus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Oliver A. Farwell", "recordNumber": "", "verbatimEventDate": "1939-07-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Keweenaw", "municipality": "", "locality": "Hebard Park", "decimalLatitude": "47.478326", "decimalLongitude": "-87.951876", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}