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": ""}
   n# 1931-05-11 BROMUS DIANDRUS VAR. RIGIDUS  nPF1      bromus +2  diandrus $hC   D Le California    5 Poales united states Jf<       Q RIGIDUS   i4 ~Contact UM Herbarium  var. w4U&  (ROTH) SALES `[   
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Bromus diandrus var. rigidus", "scientificNameAuthorship": "(Roth) Sales", "genus": "Bromus", "subgenus": "", "specificEpithet": "diandrus", "verbatimTaxonRank": "var.", "infraspecificEpithet": "rigidus", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1931-05-11", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}