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": ""}
iridaceae A8  Cheboygan ij]9   4? john h. ehlers 4789 ,FqK    < IRIS VIRGINICA VAR. SHREVEI asparagales 1mgt     = Swale.  [i x (Small) E.S. Anderson   $= MICHIGAN  1931-07-04 JJa+_   var. @3 C   qob< United States   ON -84.674318  45.538552 c&    NORTH SHORE OF BURT LAKE.  _M-   a+|BVIRGINICA    
{"catalogNumber": "", "order": "Asparagales", "family": "Iridaceae", "scientificName": "Iris virginica var. shrevei", "scientificNameAuthorship": "(Small) E.S. Anderson", "genus": "", "subgenus": "", "specificEpithet": "virginica", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "4789", "verbatimEventDate": "1931-07-04", "habitat": "Swale.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "North shore of Burt Lake.", "decimalLatitude": "45.538552", "decimalLongitude": "-84.674318", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}