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": ""}
williamstown >    <C^Gi uni7edstates George L. Ames vz;   E Morus alba   *Z0g morus    L. ^o     alba @j,   rnt 1854-05 -73.2283 H   = ROSALES  VAAG 42.6847        MORACEAE R9  1520420 9B]b 
{"catalogNumber": "1520420", "order": "Rosales", "family": "Moraceae", "scientificName": "Morus alba", "scientificNameAuthorship": "L.", "genus": "Morus", "subgenus": "", "specificEpithet": "alba", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George L. Ames", "recordNumber": "", "verbatimEventDate": "1854-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Williamstown", "decimalLatitude": "42.6847", "decimalLongitude": "-73.2283", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}