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": ""}
JOHN H. EHLERS (u`   p 45.746687   :9x ASTERALES campestris !9   7 1250468   1922-07-29 <5EJ   -84.902792 1Ip  JD9, l.   artemisia ^mwe   ASTERACEAE V.m     Big Stone Bay, Lake Michigan, Z     NDKg united states  ATEMISIA CAMPESTRIS O A   SANDY SHORE, yX 
{"catalogNumber": "1250468", "order": "Asterales", "family": "Asteraceae", "scientificName": "Artemisia campestris", "scientificNameAuthorship": "L.", "genus": "Artemisia", "subgenus": "", "specificEpithet": "campestris", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "", "verbatimEventDate": "1922-07-29", "habitat": "Sandy shore,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Big Stone Bay, Lake Michigan,", "decimalLatitude": "45.746687", "decimalLongitude": "-84.902792", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}