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": ""}
    7138738   carex  @R     5  Poales    hk United States  (P kV sprengelii  1906-05-28 l^MK.  1106 cO>    9U&& carex sprengelii     t  Frank C. ates illinois Y4t $      ^U NapervBille   K DEWEY EX S*PRENG.
{"catalogNumber": "1387348", "order": "Poales", "family": "", "scientificName": "Carex sprengelii", "scientificNameAuthorship": "Dewey ex Spreng.", "genus": "Carex", "subgenus": "", "specificEpithet": "sprengelii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frank C. Gates", "recordNumber": "1106", "verbatimEventDate": "1906-05-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "", "municipality": "", "locality": "Naperville", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}