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": ""}
   C. H. Hall    araceae f     ulster nNn  Two ferns under in grass tuffs vA   xon,) alismatales  x[ Lemna   8  x l.   le~ 1663474  Qh black pond  yr_ 2991     W Lemna trisulca    .^ TRISULCA 9 1887-08 yUNITED STATE5 ;U&s  
{"catalogNumber": "1663474", "order": "Alismatales", "family": "Araceae", "scientificName": "Lemna trisulca", "scientificNameAuthorship": "L.", "genus": "Lemna", "subgenus": "", "specificEpithet": "trisulca", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C. H. Hall", "recordNumber": "2991", "verbatimEventDate": "1887-08", "habitat": "Two ferns under in grass tuffs", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Ulster", "municipality": "", "locality": "Black Pond", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}