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. `     IRVING W. KNOBLOCH F(    U 23.1755       A rogers mcvaugh  0g Milla biflora  2 desert  Fresnillo; Fresnillo ?wCpJ     1954-07-21 ASPARAGALES _RM;     bNu MEXICO  wTZzi 1032    zj 1143268  I biflora   
{"catalogNumber": "1143268", "order": "Asparagales", "family": "", "scientificName": "Milla biflora", "scientificNameAuthorship": "Cav.", "genus": "", "subgenus": "", "specificEpithet": "biflora", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Rogers McVaugh", "recordedBy": "Irving W. Knobloch", "recordNumber": "1032", "verbatimEventDate": "1954-07-21", "habitat": "Desert", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "Fresnillo; Fresnillo", "decimalLatitude": "23.1755", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}