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": ""}
1379842 L       s.n. 7G6     7O 1923-07E-01      f^ Marcus W. Lyon, Jr   BM(6] MUEHLENBERGII    carex muehlenbergii var. muehlenbergii        Sq  MUEHLENBERGII  0TKYD var.   LX /+ AT KEISER.  O* gy UNITED STATES CAREX gpA 
{"catalogNumber": "1379842", "order": "", "family": "", "scientificName": "Carex muehlenbergii var. muehlenbergii", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "muehlenbergii", "verbatimTaxonRank": "var.", "infraspecificEpithet": "muehlenbergii", "identifiedBy": "", "recordedBy": "Marcus W. Lyon, Jr", "recordNumber": "s.n.", "verbatimEventDate": "1923-07-01", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "At Keiser.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}