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": ""}
  y!: virginia  <gQ NIGROMARGINATA      8 18 4196792 280822 Carex 8`-               Cyperaceae KAm    - near north anna river, take rt 207 (jericho rd) west from carmel church to oxford rd (rt 689). go 3.6 miles s & se on oxford rd (rt 689) to small dirt road on s side ofroad. head sw along dirt road toward nortb anna river.  SY Carex nigromarginata 1959 R  
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "Carex nigromarginata", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "nigromarginata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "1959", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Virginia", "county": "", "municipality": "", "locality": "Near North Anna River, take Rt 207 (Jericho Rd) west from Carmel Church to Oxford Rd (Rt 689). Go 3.6 miles S & SE on Oxford Rd (Rt 689) to small dirt road on S side of road. Head SW along dirt road toward North Anna River.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "18 4196792 280822", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}