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": ""}
 tridens flavus  a   tridens &.  FLAVUS V;2UX  roadside F/ei     united states )    pb 1210760 Poales  ~ 3   331 i?g   P. Cooley h~cJ    JA5EW MICHIGAN      POACEAE +7gZ   anton a. reznicek ;2 
{"catalogNumber": "1210760", "order": "Poales", "family": "Poaceae", "scientificName": "Tridens flavus", "scientificNameAuthorship": "", "genus": "Tridens", "subgenus": "", "specificEpithet": "flavus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "P. Cooley", "recordNumber": "331", "verbatimEventDate": "", "habitat": "roadside", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}