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": ""}
  N8 W 1987-07-22  > 1423916 (.) P. Beauv. t Ec  setaria [!   CANADA Km   X poaceae      23910 Y   C9R VIRIDIS   qx   Contact VM Herbarium  Ontario jZ,+a         * n. 48Â°27' w. 89Â°15' setaria viridis U   n thunder bay 
{"catalogNumber": "1423916", "order": "", "family": "Poaceae", "scientificName": "Setaria viridis", "scientificNameAuthorship": "(L.) P. Beauv.", "genus": "Setaria", "subgenus": "", "specificEpithet": "viridis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "23910", "verbatimEventDate": "1987-07-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Thunder Bay", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "n. 48\u00c2\u00b027' w. 89\u00c2\u00b015'", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}