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": ""}
 b s POACEAE    :+ Poales rigens   _  APACHE Qdg5n   United States  G     .bA 1 M-24     L. N. Goodding /C    TA (benth.) a.s. hitchc.  Arizona B    1418104 : @9F   DULe MUHLENBERG|A RIGENS     McNary HBh$. 
{"catalogNumber": "1418104", "order": "Poales", "family": "Poaceae", "scientificName": "Muhlenbergia rigens", "scientificNameAuthorship": "(Benth.) A.S. Hitchc.", "genus": "", "subgenus": "", "specificEpithet": "rigens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "L. N. Goodding", "recordNumber": "M-24", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arizona", "county": "Apache", "municipality": "", "locality": "McNary", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}