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": ""}
1894-09-05 +!Xx-  saltonstall, p. m. peterson & soreng W    e poaceae  3-<q S.N. michigan v^E_4  1307903 ?   phragmiteJs =   mg%Y POALES     americanus yI5:2        ; ANTON A. REZNICEK    42.950646 e 5HP  Emma J. Cole D7   DY subsp.
{"catalogNumber": "1307903", "order": "Poales", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "Saltonstall, P. M. Peterson & Soreng", "genus": "Phragmites", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "americanus", "identifiedBy": "Anton A. Reznicek", "recordedBy": "Emma J. Cole", "recordNumber": "s.n.", "verbatimEventDate": "1894-09-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "42.950646", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}