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": ""}
        FORT DAVIS, AROUND BIG BOULDERS AND LEDGE OF IGNEOUS ROACK, NEAR BOUNDARY OF FORT DAVIS _V;x  92520 X4g<t     d JEFF DAVIS   s = croton UNITED STATES ?TP~]  john a. churchill  b        TEXAS _#   Croton suaveolens i  1543630 C&xH  1992-09-17  dEL7f   
{"catalogNumber": "1543630", "order": "", "family": "", "scientificName": "Croton suaveolens", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John A. Churchill", "recordNumber": "92520", "verbatimEventDate": "1992-09-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Jeff Davis", "municipality": "", "locality": "Fort Davis, Around big boulders and ledge of igneous roack, near boundary of Fort Davis", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}