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": ""}
    1503253  5_ U     l DENVER  ON PAAIRIES N   grpm 50332 &1t%       BmU* emma j. cole    1V.cC uunited states  !T^ WILLD.      Dalea K%7? 
{"catalogNumber": "1503253", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Willd.", "genus": "Dalea", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Emma J. Cole", "recordNumber": "", "verbatimEventDate": "", "habitat": "On parairies", "occurrenceRemarks": "GRPM 50332", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Denver", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}