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": ""}
1960-07-03 ~0b.   MONTANA F^:@u  POACEAE 4O/   dB0 1408784  3bg>  6793      bI calamagrostis  ._ poales       y RUBESCENS united states Br  flathead + ,r   31o contact um herbarium    leroy h. harvey       - BUCKLEY 
{"catalogNumber": "1408784", "order": "Poales", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "Buckley", "genus": "Calamagrostis", "subgenus": "", "specificEpithet": "rubescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "LeRoy H. Harvey", "recordNumber": "6793", "verbatimEventDate": "1960-07-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Montana", "county": "Flathead", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}