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": ""}
  8W  Lamiales  0 catalpa speciosa       V3Us CATALPA   on 1945-10-15  HEMPHILL |u2HE  1540612 h      14 and 1/4 miles south of Candian, south side of Washita River 8vB@m    SPECIOSA 2Bw.  (warder) warder ex engelm.        
{"catalogNumber": "1540612", "order": "Lamiales", "family": "", "scientificName": "Catalpa speciosa", "scientificNameAuthorship": "(Warder) Warder ex Engelm.", "genus": "Catalpa", "subgenus": "", "specificEpithet": "speciosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1945-10-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Hemphill", "municipality": "", "locality": "14 and 1/4 miles south of Canadian, south side of Washita River", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}