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": ""}
4447 4/^@    Q United St4tes   oFV6 JOHN H. EHLERS  >(*@ 45.96627     1929-09-07 A    9 FAGACEAE  +ELw Fagales  _[ fagus    -86.026912 ]D        ehrh. 3h   grandifolia   
{"catalogNumber": "", "order": "Fagales", "family": "Fagaceae", "scientificName": "", "scientificNameAuthorship": "Ehrh.", "genus": "Fagus", "subgenus": "", "specificEpithet": "grandifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "4447", "verbatimEventDate": "1929-09-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "45.96627", "decimalLongitude": "-86.026912", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}