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": ""}
   VM  united states    C Vasey H. HAPEMAN EW     poales f   ;ag MINDEN  CuZ  arida kearney a    7$M POACEAE    H 1922-07-08    ` Nebraska    )  Poa  4 s.n. Poa arida Cv 
{"catalogNumber": "", "order": "Poales", "family": "Poaceae", "scientificName": "Poa arida", "scientificNameAuthorship": "Vasey", "genus": "Poa", "subgenus": "", "specificEpithet": "arida", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. Hapeman", "recordNumber": "s.n.", "verbatimEventDate": "1922-07-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Nebraska", "county": "Kearney", "municipality": "", "locality": "Minden", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}