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": ""}
cyperaceae &o       w VIRGIIA  /1 ? Fimbristylis castanea Rappahannock estuary, near Urbanna. MhB=  CASTANEA U17     4  (MICHX.) VAHL   zO F.R. Fosberg   _1) 16759    Middlesex #Son^   cOC Poales united states gJ_`m     :4 1939-09-10  P qU[ Fimbristylis  . 1396235 
{"catalogNumber": "1396235", "order": "Poales", "family": "Cyperaceae", "scientificName": "Fimbristylis castanea", "scientificNameAuthorship": "(Michx.) Vahl", "genus": "Fimbristylis", "subgenus": "", "specificEpithet": "castanea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F.R. Fosberg", "recordNumber": "16759", "verbatimEventDate": "1939-09-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Virginia", "county": "Middlesex", "municipality": "", "locality": "Rappahannock estuary, near Urbanna.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}