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": ""}
 : 1874-03-29 po aceae t   fF Nees ex Steud. arizona  V  1407682 E#       g&h s UNITED STATES BROMUS =      O[h% MARGINATUS J.B. Girard qs  BROMUS MARGINATUS .       *ql 4 Navajo  POALES ~v    
{"catalogNumber": "1407682", "order": "Poales", "family": "Poaceae", "scientificName": "Bromus marginatus", "scientificNameAuthorship": "Nees ex Steud.", "genus": "Bromus", "subgenus": "", "specificEpithet": "marginatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "J.B. Girard", "recordNumber": "", "verbatimEventDate": "1874-03-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arizona", "county": "Navajo", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}