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": ""}
    missouri -  CYPERACEAE TbV     Rock Bridge State Park, ca 50 m NW of the bridge over Rock Bridge Creek adjacent to the parking lot for Deil's Icebox Cave &surrounding hiking trails, Ashland 7.5' Quad. ]sQ]-      1996-06-16 |=s5v         +O  Muhl. ex Willd. Paul M. McKenzie B    lz 1721  
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "", "scientificNameAuthorship": "Muhl. ex Willd.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Paul M. McKenzie", "recordNumber": "1721", "verbatimEventDate": "1996-06-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Missouri", "county": "", "municipality": "", "locality": "Rock Bridge State Park, ca 50 m NW of the bridge over Rock Bridge Creek adjacent to the parking lot for Devil's Icebox Cave & surrounding hiking trails, Ashland 7.5' Quad.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}