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": ""}
  un  ELAEAGNACEAE  !m S.N.      !B shepherdia canadensis  1507985 .1 I    U emma j. cole  CANADENSIS k8s     W  (l.) nutt.  m[DF ROSALES  6o`3w BOTTINEAU GRPM 4920b8 ?W8  1905-07-27 ~7j,%  Shepherdia G7h      z?Azj Bottineau  United States 1cF   z North Dakota  
{"catalogNumber": "1507985", "order": "Rosales", "family": "Elaeagnaceae", "scientificName": "Shepherdia canadensis", "scientificNameAuthorship": "(L.) Nutt.", "genus": "Shepherdia", "subgenus": "", "specificEpithet": "canadensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Emma J. Cole", "recordNumber": "s.n.", "verbatimEventDate": "1905-07-27", "habitat": "", "occurrenceRemarks": "GRPM 49208", "associatedTaxa": "", "country": "United States", "stateProvince": "North Dakota", "county": "Bottineau", "municipality": "", "locality": "Bottineau", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}