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": ""}
1257884 ;   rS 1916-09-10  -84.22654 z  MACKINAC xPI    xRjF asper asterales to   283 s [*B   I SONCHUS ASPER  eP# John H5. Ehlers  PRENTIS BAY, 1r  united states 35h   RVF michigan          ?&l  Clearing -  asteraceae XU8o*  SONCHUS zIN 
{"catalogNumber": "1257884", "order": "Asterales", "family": "Asteraceae", "scientificName": "Sonchus asper", "scientificNameAuthorship": "", "genus": "Sonchus", "subgenus": "", "specificEpithet": "asper", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "283", "verbatimEventDate": "1916-09-10", "habitat": "Clearing -", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Mackinac", "municipality": "", "locality": "Prentis Bay,", "decimalLatitude": "", "decimalLongitude": "-84.22654", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}