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": ""}
 +NI= mixed collection with 21419b (S. neglectus)  21419a ?&;S5       vaginiflorus    (Torr. ex A. Gray) Alph. Wood o,   -J 43.19749 sporobolus vaginiflorus +R*[   Sporobolus ? !U`   canada >Zk|4     michael j. oldh4m 8U)c     e  brant  MICHAEL J. OLDHAM mi2    
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Sporobolus vaginiflorus", "scientificNameAuthorship": "(Torr. ex A. Gray) Alph. Wood", "genus": "Sporobolus", "subgenus": "", "specificEpithet": "vaginiflorus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Michael J. Oldham", "recordedBy": "Michael J. Oldham", "recordNumber": "21419a", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "mixed collection with 21419b (S. neglectus)", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "Brant", "municipality": "", "locality": "", "decimalLatitude": "43.19749", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}