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": ""}
 / 1947-04-30  ,.K cactaceae BREWSTER g< ^/   KHtb UNTED STATES 53 yo F  margery s. anthony  #     $-~jW 4 mi. s. 0f h of springs turn off from basin rd. big bend nat. park    sB 1644310  o ENGELANNII Opuntia 4 L    l. benson bnG[     qt  salm-dyck  o.EUi Texas  CARYOPHYLLALES )  OPUNTIA ENGELANNII sQ01y     
{"catalogNumber": "1644310", "order": "Caryophyllales", "family": "Cactaceae", "scientificName": "Opuntia engelmannii", "scientificNameAuthorship": "Salm-Dyck", "genus": "Opuntia", "subgenus": "", "specificEpithet": "engelmannii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "L. Benson", "recordedBy": "Margery S. Anthony", "recordNumber": "53", "verbatimEventDate": "1947-04-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brewster", "municipality": "", "locality": "4 mi. s. of H of Springs turn off from Basin Rd. Big Bend Nat. Park", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}