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": ""}
 X 6r 1926-07-23    1406694 BkTZ    [, (KUNTH) LAG. EX GRIFFITHS  ( bouteloua   t e. of winnett.  Nyh 914   ~lO2 UNITEDSTATES  AU s.n. BOUTELOUA GRACILIS +3s  JE. J. Bell CEMD=    ;K$ Petroeum gracilis #9;    E  Poales   - MONTANA     
{"catalogNumber": "1406694", "order": "Poales", "family": "", "scientificName": "Bouteloua gracilis", "scientificNameAuthorship": "(Kunth) Lag. ex Griffiths", "genus": "Bouteloua", "subgenus": "", "specificEpithet": "gracilis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "E. J. Bell", "recordNumber": "s.n.", "verbatimEventDate": "1926-07-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Montana", "county": "Petroleum", "municipality": "", "locality": "E. of Winnett.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "914", "maximumElevationInMeters": ""}