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": ""}
  MICHIGAN la$M   k;  UNITED STATES VAN BUREN J=   Om5 Anton A. Reznicek     Elymus riparius 4  POALES  G D     z elymus  42.35699 @~     8z(QB 2011-09-12 riparius   bi     $ Occasional.  1:x0k 117 1483300 T%   wiegand 5 ?lz 
{"catalogNumber": "1483300", "order": "Poales", "family": "", "scientificName": "Elymus riparius", "scientificNameAuthorship": "Wiegand", "genus": "Elymus", "subgenus": "", "specificEpithet": "riparius", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "", "recordNumber": "117", "verbatimEventDate": "2011-09-12", "habitat": "", "occurrenceRemarks": "Occasional.", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Van Buren", "municipality": "", "locality": "", "decimalLatitude": "42.35699", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}