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": ""}
    5 1988-07-19  Dickinson kv+   UNITED STATES <h      Fraxinus nigra    % "foliage from tree ca. 4" dbh; fruit from ground beneath."   D3 FRAXINUS OLEACEAE XxK0   edward g. voss [     !v 8 15955  &8By FREQUENT TREE IN MIXED SWAMP FOREST nigra p :    w>Su 1174959  
{"catalogNumber": "1174959", "order": "", "family": "Oleaceae", "scientificName": "Fraxinus nigra", "scientificNameAuthorship": "", "genus": "Fraxinus", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "15955", "verbatimEventDate": "1988-07-19", "habitat": "frequent tree in mixed swamp forest", "occurrenceRemarks": "\"Foliage from tree ca. 4\" dbh; fruit from ground beneath.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Dickinson", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}