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": ""}
   < /7 columbi4na   Michigan     VxA E. Landolt  T p.h. eschmeyer  C. ALISMATALES   oT UNITED STATES   qgD 1938-07-31  v, h. karst.  [+ lemna trisulca (also on separate sheet)][inactive barcode. on same sheet as spirodela polyrhiza with active barcode 1289942 and lemna trisulca with inactive barcode 1289943] Qx_u      1289944 /|   |$y$! 502  $dU -85.217223   ,9 Wolffia calhoun  WX  depth of water: 1/2-5 ft bottom: marl, fibrous peat )xcF    
{"catalogNumber": "1289944", "order": "Alismatales", "family": "", "scientificName": "", "scientificNameAuthorship": "H. Karst.", "genus": "Wolffia", "subgenus": "", "specificEpithet": "columbiana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "P.H. Eschmeyer", "recordNumber": "502", "verbatimEventDate": "1938-07-31", "habitat": "Depth of water: 1/2-5 ft Bottom: marl, fibrous peat", "occurrenceRemarks": "[+ Lemna trisulca (also on separate sheet)][Inactive barcode. On same sheet as Spirodela polyrhiza with active barcode 1289942 and Lemna trisulca with inactive barcode 1289943]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Calhoun", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-85.217223", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}