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": ""}
 /a 6979      Wolffia columbiana ik IJ    [py&0 HURON RIVER AT GEDDES AVE B2RIDGE, 2.5 MI. E. OF ANN ARBOR.   > united states    |KUA WASHTENAW   , alismatales     Michigan /YN/     >w~  e. landol   <- ARACEAE wolffia ! , 
{"catalogNumber": "", "order": "Alismatales", "family": "Araceae", "scientificName": "Wolffia columbiana", "scientificNameAuthorship": "", "genus": "Wolffia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "", "recordNumber": "6979", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Huron River at Geddes Ave bridge, 2.5 mi. E. of Ann Arbor.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}