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": ""}
    20037 m  [r       asparagaceae K      LIMESTONE WITH PINE ANDT OAK  p  Mexico bd    QaC 25.127  [%Aj ASPARAGALES   <u saltillo  MACROCULMIS s  agave +    uT=A |963-06-12 
{"catalogNumber": "", "order": "Asparagales", "family": "Asparagaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Agave", "subgenus": "", "specificEpithet": "macroculmis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "20037", "verbatimEventDate": "1963-06-12", "habitat": "Limestone with pine and oak", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "Saltillo", "municipality": "", "locality": "", "decimalLatitude": "25.127", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}