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": ""}
bromus richardsonii xT    ^9TE POACEAE    (4B3; 6421    CONTACT UM HERBARIUM a `     &zjYl LINK      LOIS S. EHLERS  u5    1922-07-23 jb;u-  United States  M,Z!   S~ Colorado  =,px 1407885   El Paso *   ]@f richardsonii
{"catalogNumber": "1407885", "order": "", "family": "Poaceae", "scientificName": "Bromus richardsonii", "scientificNameAuthorship": "Link", "genus": "", "subgenus": "", "specificEpithet": "richardsonii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Lois S. Ehlers", "recordNumber": "6421", "verbatimEventDate": "1922-07-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Colorado", "county": "El Paso", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}