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": ""}
   1960-05-06 n,k_    |P HORDEUM  Nutt.  o   HORDEUM PUSILLUM v2      pusillum f    Lipscomb ?[^C  United States +;wm   E$. CHARLES S. WALLIS 8456 GVL:   6 Poales  W+) poaceae  rw contact um herbarium    
{"catalogNumber": "", "order": "Poales", "family": "Poaceae", "scientificName": "Hordeum pusillum", "scientificNameAuthorship": "Nutt.", "genus": "Hordeum", "subgenus": "", "specificEpithet": "pusillum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles S. Wallis", "recordNumber": "8456", "verbatimEventDate": "1960-05-06", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Lipscomb", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}