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": ""}
    lNa cannabaceae   ^A 1950-07-01   ?vN (jacq.) sarg.  1265691  w       Richard HowardQG   15 rns         y CELTIS  Cuba 0 
{"catalogNumber": "1265691", "order": "", "family": "Cannabaceae", "scientificName": "", "scientificNameAuthorship": "(Jacq.) Sarg.", "genus": "Celtis", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Richard Howard", "recordNumber": "15", "verbatimEventDate": "1950-07-01", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Cuba", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}