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": ""}
  near biltmore <qc6d   BUNCOMBE Y |VQ  silphium compositum S  united states h  Michx.     compo5itum arrk6   %O Dry woodlands NOT EVIDENT I     r8Jmp NORTH CAROLINA    c  s.n. ASTERALES c    rk$)  Silphium asteraceae ?zTF    9`L,M 1539486  - GRPM 42210  a 1897-08-03 
{"catalogNumber": "1539486", "order": "Asterales", "family": "Asteraceae", "scientificName": "Silphium compositum", "scientificNameAuthorship": "Michx.", "genus": "Silphium", "subgenus": "", "specificEpithet": "compositum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Not evident", "recordNumber": "s.n.", "verbatimEventDate": "1897-08-03", "habitat": "Dry woodlands", "occurrenceRemarks": "GRPM 42210", "associatedTaxa": "", "country": "United States", "stateProvince": "North Carolina", "county": "Buncombe", "municipality": "", "locality": "Near Biltmore", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}