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": ""}
     n- walter n. koelz   $ amaranthaeae  AMARANTHUS kUfOB,     ~UW fields  UE$  1931-03-02   :rad 305   ZDYS keshapur  NO DATA 2 uk   `I 1624 Gfn 1497950 viriQdis 7]9      
{"catalogNumber": "1497950", "order": "", "family": "Amaranthaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Amaranthus", "subgenus": "", "specificEpithet": "viridis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "1624", "verbatimEventDate": "1931-03-02", "habitat": "Fields", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "no data", "municipality": "", "locality": "Keshapur", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "305", "maximumElevationInMeters": ""}