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": ""}
       1890-08-27 V F        HY-84.64989  obtusifolium 7WR    (l.) hilliard & b. l. burtt l;g     Gratiot     michiqan  IB,     =@z Charles A. Davis  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "(L.) Hilliard & B. L. Burtt", "genus": "", "subgenus": "", "specificEpithet": "obtusifolium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles A. Davis", "recordNumber": "", "verbatimEventDate": "1890-08-27", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Gratiot", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-84.64989", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}