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": ""}
Berteroa incana +D*   yw Michigan   J ?7 2247  INCANA 1     calvin h. kauffman, john h. ehlers, bessie b. kanouse & lois s. hlers ^j`D  United States 9sB    brassicaceae D%yF8   1923-06-16 ^  sandy roadsioe f         Ym BERTEROA   LIVINGSTON ?  
{"catalogNumber": "", "order": "", "family": "Brassicaceae", "scientificName": "Berteroa incana", "scientificNameAuthorship": "", "genus": "Berteroa", "subgenus": "", "specificEpithet": "incana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Calvin H. Kauffman, John H. Ehlers, Bessie B. Kanouse & Lois S. Ehlers", "recordNumber": "2247", "verbatimEventDate": "1923-06-16", "habitat": "Sandy roadside", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Livingston", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}