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": ""}
    68 lm SCHKUHR EXQ MILLD. CAREX OLIGOCARPA +  kentucky ~x      ,sw Cyperaceae  x Poales ca 3 mi ssw of haywood, ca 0.6 mi 3 of route 31e, n of dover church-browning road & of barren river lake, brigadoon state nature preserve, at s edge of preserve.  N&      Z 199-06-14   ROBERT F.C. NACZI @7     zqFS, barren  carex     uh 6469    
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex oligocarpa", "scientificNameAuthorship": "Schkuhr ex Willd.", "genus": "Carex", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert F.C. Naczi", "recordNumber": "6469", "verbatimEventDate": "1997-06-14", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Kentucky", "county": "Barren", "municipality": "", "locality": "Ca 3 mi SSW of Haywood, ca 0.6 mi E of Route 31E, N of Dover Church-Browning Road & S of Barren River Lake, Brigadoon State Nature Preserve, at S edge of preserve.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}