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": ""}
  &f MUHL. EX WILLD. carexK retroflexa J       essex U4   - ma9 1982-05-22   ONTARIO HIb3I    2427 =[g   J UTM 430560      Q3Ua Poales      #0 retroflexa 
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Carex retroflexa", "scientificNameAuthorship": "Muhl. ex Willd.", "genus": "", "subgenus": "", "specificEpithet": "retroflexa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "2427", "verbatimEventDate": "1982-05-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ontario", "county": "Essex", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "UTM 430560", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}