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": ""}
  R2w 46â° 20t' n, 83â° 53' w  Jonson Twp., Stoby Creek, S. of Hwy. 17, 2.5 km E. of Desbarats, Grid-780346 (41 J/5)  |     B spirodela polyrhiza     W.J. Crins `  1993-07-29 yu:q~        OCe* -83.8833333333    kADW? (l.) schleid.  w%8j9 POLYRHIZA  k ONTARIO ALISMATALES  Om+   Zalgoma   
{"catalogNumber": "", "order": "Alismatales", "family": "", "scientificName": "Spirodela polyrhiza", "scientificNameAuthorship": "(L.) Schleid.", "genus": "", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W.J. Crins", "recordNumber": "", "verbatimEventDate": "1993-07-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ontario", "county": "Algoma", "municipality": "", "locality": "Johnson Twp., Stoby Creek, S. of Hwy. 17, 2.5 km E. of Desbarats, Grid-780346 (41 J/5)", "decimalLatitude": "", "decimalLongitude": "-83.8833333333", "verbatimCoordinates": "46\u00c2\u00b0 20' N, 83\u00c2\u00b0 53' W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}