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": ""}
   t0 21509  @T Sand Rive at public camping site; Eva Twp. persicaria r1q   CLAUDE E. GARTON v&     E^<r Claude E. Garton  ONTARIO =P  (L.) M. GÃ³MEZ ,ddUa  CANADA  y%/  HERE ABOVE OR WITH SCATTERED JUNCUS SPP. PLENTIFUL. b6xOUF    _B THUNDER BAY 1982-08-14 ` 5+P   g] 49.633222  6rAv -88.090044 IN MOIST SAND OF BEACH AREA JUST BEHIND STRAND CREST. | JUNCUS SPP.  dR  49â°38'n, 88â°06'w    Polygonaceae L:   pensylvanica r   
{"catalogNumber": "", "order": "", "family": "Polygonaceae", "scientificName": "", "scientificNameAuthorship": "(L.) M. G\u00c3\u00b3mez", "genus": "Persicaria", "subgenus": "", "specificEpithet": "pensylvanica", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Claude E. Garton", "recordedBy": "Claude E. Garton", "recordNumber": "21509", "verbatimEventDate": "1982-08-14", "habitat": "In moist sand of beach area just behind strand crest. | Juncus spp.", "occurrenceRemarks": "Here above or with scattered Juncus spp. Plentiful.", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Thunder Bay", "municipality": "", "locality": "Sand River at public camping site; Eva Twp.", "decimalLatitude": "49.633222", "decimalLongitude": "-88.090044", "verbatimCoordinates": "49\u00c2\u00b038'N, 88\u00c2\u00b006'W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}