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": ""}
 JW Melilotus     s1 FABACEAE  alger 6m   -86.37 _x$a~    officinalis  Hg    @2  anton a. reznicek  g. beckwitgh g-C     Melilotus officinalis r   S.N. B SC        &DC$ (l.) lam.
{"catalogNumber": "", "order": "", "family": "Fabaceae", "scientificName": "Melilotus officinalis", "scientificNameAuthorship": "(L.) Lam.", "genus": "Melilotus", "subgenus": "", "specificEpithet": "officinalis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "G. Beckwith", "recordNumber": "s.n.", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Alger", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-86.37", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}