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": ""}
 1866-07-16 ze   -!  6032   california B.   aF clark's meadows at the big tree grove, mariposa, ca. Engelm. 7(@q   ~ George Engelmann  2LT POA1ES      (Rbh H. Bolander    <+ in large tufts in wet granit s4nd.  :>[Ws UNITED STATES juncus          
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "", "scientificNameAuthorship": "Engelm.", "genus": "Juncus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "George Engelmann", "recordedBy": "H. Bolander", "recordNumber": "6032", "verbatimEventDate": "1866-07-16", "habitat": "In large tufts in wet granit sand.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "", "municipality": "", "locality": "Clark's meadows at the Big Tree Grove, Mariposa, CA.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}