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": ""}
 %z 1891-08-21 M.A.C., Lansing sl#Rb     X<kW -84.44861     (yd VASEY EX WICKSON  ML E Agropyron   ? MICHIGAN ES.N. ~Vk$      Poaceae /~8   poales J&N  GRPM 43280 b-V/h    l-_MJ ingham 1337973 +     g]) h George D. Sones 
{"catalogNumber": "1337973", "order": "Poales", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "Vasey ex Wickson", "genus": "Agropyron", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George D. Sones", "recordNumber": "s.n.", "verbatimEventDate": "1891-08-21", "habitat": "", "occurrenceRemarks": "GRPM 43280", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Ingham", "municipality": "", "locality": "M.A.C., Lansing", "decimalLatitude": "", "decimalLongitude": "-84.44861", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}