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": ""}
4037 k&     uv  (Michhx.) Vahl United States -(x  POALES &l    r%un captellata  US RT 19, 3 MI N OF MARBLE.  ir   1399539 uuo     S 8 North Carolina    ? Cyperaceae     ?, rhynchospora capitellawta rhynchospora 7     [: 1950-07-14  O WILLIAM B. FOX cherokee @UT   
{"catalogNumber": "1399539", "order": "Poales", "family": "Cyperaceae", "scientificName": "Rhynchospora capitellata", "scientificNameAuthorship": "(Michx.) Vahl", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "capitellata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "William B. Fox", "recordNumber": "4037", "verbatimEventDate": "1950-07-14", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "North Carolina", "county": "Cherokee", "municipality": "", "locality": "US Rt 19, 3 mi N of Marble.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}