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": ""}
  ` SHUTTLEW. EX KUNZE    CI< 51626     5 UNITE STATES     texas  6 MILES WEST OF COLLEGE STATION, 1 MILE SOUTH OF JONES BRIDGE. 8g lb    CAREX ,]B  BRAZOS/9f:     bL mI 1946-04-20   CRUS-CORVI IN:y        
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Shuttlew. ex Kunze", "genus": "Carex", "subgenus": "", "specificEpithet": "crus-corvi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "51626", "verbatimEventDate": "1946-04-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brazos", "municipality": "", "locality": "6 miles west of College Station, 1 mile south of Jones Bridge.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}