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": ""}
1838-05-20 42|#  s.n. :G     v` gilib.  champaign x       0c1 MUDDY RIVER   @  UNITED STATES        d6 BRASSICACEAE   Branch of Mud River le uq   | Armoracia lapathifolia lapathifolia 7]T  1500973 eR +    Y#v) John Samples
{"catalogNumber": "1500973", "order": "", "family": "Brassicaceae", "scientificName": "Armoracia lapathifolia", "scientificNameAuthorship": "Gilib.", "genus": "", "subgenus": "", "specificEpithet": "lapathifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John Samples", "recordNumber": "s.n.", "verbatimEventDate": "1838-05-20", "habitat": "Muddy river", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Champaign", "municipality": "", "locality": "Branch of Mud River", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}