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": ""}
POTOMAC RIVER GORGE, GREAT FALLS PARK, PATOWMACK CANAL, LOCK ONE, ALONG WESTERN BERM OF MATIDAVILLE TRAIL. 4njM    U< poales  30515.1 -      6:A Carex    T virginia cyperaceae m6   2003-05-15 3^N     RZ schwein. & torr. 8ret w. steury x? zT  Fairfax  w    x 1367707     [ davisii    carex dav-isii JS6&   united states ^&E 
{"catalogNumber": "1367707", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex davisii", "scientificNameAuthorship": "Schwein. & Torr.", "genus": "Carex", "subgenus": "", "specificEpithet": "davisii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Brent W. Steury", "recordNumber": "30515.1", "verbatimEventDate": "2003-05-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Virginia", "county": "Fairfax", "municipality": "", "locality": "Potomac River Gorge, Great Falls Park, Patowmack Canal, lock one, along western berm of Matidaville Trail.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}