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": ""}
H. Karst. S     uC4#G 6892 Wolffia columbiana o#  1982-07-24 8 Mz    sKbH CANADA   w< co;lumbiana     P|Wuz GREY      &f wolffia  ; ALISMATALES densly abundant with spirodela polyrhiza on surface of small pond in old fzield nNzO  ontario ,W   9#c 1663136 A. A. Reznicek m `fn   ] COLLINGWOOD TOWNSHIP, CONC. I-II, LOTS 3-4, 8 KM SOUTHWEST OF COLLINGWOOD, PRETT Y RIVER VALLEY OLD FIELDS GROWN UP WITH CRATAEGUS SPP., LOCALLY PASTURED AND, IN A FEW AREAS, SEEPY WITH DENSE GROWTH O YOUNG THUJA OCCIDENTALIS M>`7  
{"catalogNumber": "1663136", "order": "Alismatales", "family": "", "scientificName": "Wolffia columbiana", "scientificNameAuthorship": "H. Karst.", "genus": "Wolffia", "subgenus": "", "specificEpithet": "columbiana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "A. A. Reznicek", "recordNumber": "6892", "verbatimEventDate": "1982-07-24", "habitat": "Old Fields grown up with Crataegus spp., locally pastured and, in a few areas, seepy with dense growth of young Thuja occidentalis", "occurrenceRemarks": "densly abundant with Spirodela polyrhiza on surface of small pond in old field", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Grey", "municipality": "", "locality": "Collingwood Township, Conc. I-II, lots 3-4, 8 km southwest of Collingwood, Pretty River Valley", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}