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": ""}
    L. se  1994-08-11 W6v  MARQUETTE ?;  -87.47885 qB   -h]  UNITED STATES  P$ 3907  N SONCHUS ARVENSIS michigan %7       c ASTERACEAE  SE 1/4 SEC 30 T48N-R25W l     ^ 1257833       ASTERALES N*  
{"catalogNumber": "1257833", "order": "Asterales", "family": "Asteraceae", "scientificName": "Sonchus arvensis", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "3907", "verbatimEventDate": "1994-08-11", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Marquette", "municipality": "", "locality": "SE 1/4 Sec 30 T48N-R25W.", "decimalLatitude": "", "decimalLongitude": "-87.47885", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}