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": ""}
 %C 1999-05-08  Mg4 cyperaceae    n Carex cherokeensis  carex L    lP$  walkerville vicinity, about 3 miles north on ark. hwy. 19 at horsehead creek, northern most bridge.               ); trs: t18s r21w sec 32 ne4ofsw4     
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "Carex cherokeensis", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1999-05-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Walkerville vicinity, about 3 miles north on Ark. Hwy. 19 at Horsehead Creek, northern most bridge.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "TRS: T18S R21W sec 32 NE4ofSW4", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}