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": ""}
 MARSHALL _&   $u @ salix nigra  PETER W. FRITSCH lD  HILLSDALE /   F =e* salix 41.833129 sZX      ` 567  0 malpighiales "anthers yellow; shrub â± 2.5 m tall."  $Px      local in moist, black soil in marsh. xf          
{"catalogNumber": "", "order": "Malpighiales", "family": "", "scientificName": "Salix nigra", "scientificNameAuthorship": "Marshall", "genus": "Salix", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Peter W. Fritsch", "recordNumber": "567", "verbatimEventDate": "", "habitat": "Local in moist, black soil in marsh.", "occurrenceRemarks": "\"Anthers yellow; shrub \u00c2\u00b1 2.5 m tall.\"", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Hillsdale", "municipality": "", "locality": "", "decimalLatitude": "41.833129", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}