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": ""}
betula .      64 1341987 united states zm6J>    g;Mx Betulaceae  ~D?b -4.718146 michigan :   q gilbert h. hicks    p+ 1888-05-30  ra Betula pumila crawford 1H1$w     S.N.   93u7b GRAYING L. 0     pumila dy    
{"catalogNumber": "1341987", "order": "", "family": "Betulaceae", "scientificName": "Betula pumila", "scientificNameAuthorship": "L.", "genus": "Betula", "subgenus": "", "specificEpithet": "pumila", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Gilbert H. Hicks", "recordNumber": "s.n.", "verbatimEventDate": "1888-05-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Crawford", "municipality": "", "locality": "Graying", "decimalLatitude": "", "decimalLongitude": "-84.718146", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}