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": ""}
   Opuntia rufida b.,Y   KR_D? Brewster      OPUNTIA p    _ =# 1250  !z 1947-04-03    `~ Cactaceae  & ENGELM. rufida %9      Caryophyllales   N O+/ among igneous rocks    
{"catalogNumber": "", "order": "Caryophyllales", "family": "Cactaceae", "scientificName": "Opuntia rufida", "scientificNameAuthorship": "Engelm.", "genus": "Opuntia", "subgenus": "", "specificEpithet": "rufida", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1947-04-03", "habitat": "among igneous rocks", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Brewster", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1250", "maximumElevationInMeters": ""}