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": ""}
1831-06 6tc   N anthoxanthum POACEAE = - p  s.n.  u$,3     7E;t7 (schrank) y. schouten & veldkamp  ANTHOXANTHUM HIRTUM @R  schoolcraft expedition to the sourcek of the mississppi river [coordinates arbitrarily placed along the st. maryâs river tshore at point aux pins] na0081078 zhJ/   U POALES    <~  1337740   71 46.464233  :a canada  ONTARIO Y~Q!  DOUGLASS HOUGHTON ?$%S   POINT AUX PINS, ST. MARY'S RIV. WEST OF SAULT STE. MARIE t         2c  ALGOMA
{"catalogNumber": "1337740", "order": "Poales", "family": "Poaceae", "scientificName": "Anthoxanthum hirtum", "scientificNameAuthorship": "(Schrank) Y. Schouten & Veldkamp", "genus": "Anthoxanthum", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Douglass Houghton", "recordNumber": "s.n.", "verbatimEventDate": "1831-06", "habitat": "", "occurrenceRemarks": "Schoolcraft Expedition to the Source of the Mississippi River [Coordinates arbitrarily placed along the St. Mary\u00e2\u0080\u0099s River shore at Point Aux Pins] NA0081078", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Algoma", "municipality": "", "locality": "Point aux Pins, St. Mary's Riv. West of Sault Ste. Marie", "decimalLatitude": "46.464233", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}