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": ""}
cav.  +wh   7F TRADESCANTIA     u Commelinaceae     b tradescantia crassifolia   1986-11-15 :A   mexico ^k        $^ -92.6344 16.7405 NDP   T  dennis e. breedlove 1141700 ]*Ca   $+: crassifolia  
{"catalogNumber": "1141700", "order": "", "family": "Commelinaceae", "scientificName": "Tradescantia crassifolia", "scientificNameAuthorship": "Cav.", "genus": "Tradescantia", "subgenus": "", "specificEpithet": "crassifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Dennis E. Breedlove", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1986-11-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "16.7405", "decimalLongitude": "-92.6344", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}