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": ""}
united states #   colorado q 0 e   Rio Grande : SU        f BROMUS RICHARDSONII  poaceae 3x    KL GEORGE B. VAN SCHAACK    e2 1407904 RICHARDSONII H Eh    w 1949-08-02   BROUS eSG     
{"catalogNumber": "1407904", "order": "", "family": "Poaceae", "scientificName": "Bromus richardsonii", "scientificNameAuthorship": "", "genus": "Bromus", "subgenus": "", "specificEpithet": "richardsonii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George B. Van Schaack", "recordNumber": "", "verbatimEventDate": "1949-08-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Colorado", "county": "Rio Grande", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}