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 x 75/f/453    rigidus POALES S,      Roth  .V@%     bromus rigidus 6!  Poaceae XS)?  occitanie 06<     1975-06-16 Q       FRANCE *   rocailles + rudealisees au bord du lit asseche de la petit riviere. zfPl  
{"catalogNumber": "", "order": "Poales", "family": "Poaceae", "scientificName": "Bromus rigidus", "scientificNameAuthorship": "Roth", "genus": "", "subgenus": "", "specificEpithet": "rigidus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "75/F/453", "verbatimEventDate": "1975-06-16", "habitat": "Rocailles + ruderalisees au bord du lit asseche de la petit riviere.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "France", "stateProvince": "Occitanie", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}