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": ""}
 Carex ub$b  Union [NwYA  18667 op    TRS: T13S R2W SEC 4 NW1/4 SE1/4 :gx   on united states  var. ?   CAREX MUEHLENBERGII VAR. ENERVIS (*      !Kq  illinois loy r. 9phillippe, david ketzner (mmk      cV-1 1991-05-07    zKie enervis 1379695 GIw4    uX  poales  
{"catalogNumber": "1379695", "order": "Poales", "family": "", "scientificName": "Carex muehlenbergii var. enervis", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "enervis", "identifiedBy": "", "recordedBy": "Loy R. Phillippe, David Ketzner", "recordNumber": "18667", "verbatimEventDate": "1991-05-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "Union", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "TRS: T13S R2W sec 4 NW1/4 SE1/4", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}