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": ""}
   =gJ Mississipi       s&+ ca 3 mi sw clarksdale, jct hwys us 61 & ms 322. e of us 61.      POALES ~ Xi  carex flaccosperma hq!   1992-04-24 Cd[?  FLACCOSPERMA LH]B      HDEWEY Q `y       
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Carex flaccosperma", "scientificNameAuthorship": "Dewey", "genus": "", "subgenus": "", "specificEpithet": "flaccosperma", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1992-04-24", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Mississippi", "county": "", "municipality": "", "locality": "Ca 3 mi SW Clarksdale, jct hwys US 61 & MS 322. E of US 61.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}