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": ""}
  )$T J. WILLIAM THOMPSON   at_ Bromus marginatus 14978 Z   0 United States   POACEAE o4-F    V*b Nees ex Steud.    3h6 washington    /Hf; CHELAN   bromus  xO   F d Poales  1940-07-10 -v   contact um herbarium ,F6.l   sp 1407700   
{"catalogNumber": "1407700", "order": "Poales", "family": "Poaceae", "scientificName": "Bromus marginatus", "scientificNameAuthorship": "Nees ex Steud.", "genus": "Bromus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "J. William Thompson", "recordNumber": "14978", "verbatimEventDate": "1940-07-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Washington", "county": "Chelan", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}