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": ""}
 ?  WYOMING piptatherum exiguum lh  Piptatherum 5   ? POALES 1420617    a     (HURB.) DORN  s%Y[   J. W. BLANKENSHIP ~K*  1899-07-08 A    K POACEAE    Kl<  park    yqiut Yellowstone Falls   rUl  exiguum  YTLVu United States      K =4Db S.N.
{"catalogNumber": "1420617", "order": "Poales", "family": "Poaceae", "scientificName": "Piptatherum exiguum", "scientificNameAuthorship": "(Thurb.) Dorn", "genus": "Piptatherum", "subgenus": "", "specificEpithet": "exiguum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "J. W. Blankenship", "recordNumber": "s.n.", "verbatimEventDate": "1899-07-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Wyoming", "county": "Park", "municipality": "", "locality": "Yellowstone Falls", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}