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": ""}
     BC=r POACEAE    texas YF0a   V RYDB.    +3F?L 1941-11-15   y4!+ 1406450    On sandy black soil united states f   a 316 saccharoides b4DXy   /3  BOTHRIOCHLOA  -O  J.N. WEAVER  s/Ly bothriochloa saccharoides brazos co. B9    $ nu brazos  POALES E+!  
{"catalogNumber": "1406450", "order": "Poales", "family": "Poaceae", "scientificName": "Bothriochloa saccharoides", "scientificNameAuthorship": "Rydb.", "genus": "Bothriochloa", "subgenus": "", "specificEpithet": "saccharoides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "J.N. Weaver", "recordNumber": "316", "verbatimEventDate": "1941-11-15", "habitat": "On sandy black soil", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brazos", "municipality": "", "locality": "Brazos Co.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}