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": ""}
       2831 ynrp    (k&` united states    f+2 Poales  ^2RQ aleutians west   carex pluriflora w   Jx f< southern slopes of mountain nw of pyramid cove, massacre bay, attu island. 1949-08-29 6=   CYPERACEAE CcIY   CAREX MCu  PLURIFLORA  -     
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex pluriflora", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "pluriflora", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "2831", "verbatimEventDate": "1949-08-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Aleutians West", "municipality": "", "locality": "Southern slopes of mountain NW of Pyramid Cove, Massacre Bay, Attu Island.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}