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": ""}
 0 s.n.   _z charles k. dodge   u 4Rv -82.4647     South of Port Huron. If3?   salicaceae KN   7 1893-05-31  q 42.9264   Malpighiales x    nMwa SALIX pyrifolia vYE   t 1318973     I[ United States   salix pyrifolia zZAB 
{"catalogNumber": "1318973", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Salix pyrifolia", "scientificNameAuthorship": "", "genus": "Salix", "subgenus": "", "specificEpithet": "pyrifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles K. Dodge", "recordNumber": "s.n.", "verbatimEventDate": "1893-05-31", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "South of Port Huron.", "decimalLatitude": "42.9264", "decimalLongitude": "-82.4647", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}