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": ""}
 B-@ 1940-06-11 41.896648 U1ft   @ Cass   o 1/2 MI. S. OF M-608 AT JONES. Sandy roadside. 1!   Michigan a Q,c   FvJV dioscorea villosa  BETTY M. ROBERTSON  K ;C  1340017 X# uP     Av dioscoreales UNITED STATES JF     K5&Zb 4H26   DIOSCOREA ut   L. A@    0< VILLOSA    n!oN DIOSCOREACEAE
{"catalogNumber": "1340017", "order": "Dioscoreales", "family": "Dioscoreaceae", "scientificName": "Dioscorea villosa", "scientificNameAuthorship": "L.", "genus": "Dioscorea", "subgenus": "", "specificEpithet": "villosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Betty M. Robertson", "recordNumber": "426", "verbatimEventDate": "1940-06-11", "habitat": "Sandy roadside.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cass", "municipality": "", "locality": "1/2 mi. S. of M-60 at Jones.", "decimalLatitude": "41.896648", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}