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": ""}
    railroad prairie natural area, east of carlisle, n of us hwy 70 & s of old railroad bed, just e of a n-s gravel rd. 8,    ($& -91.691344      arkansas           W carex opaca  34.783557 NZws  POALES 0O#h  w.h. shepherd )   1y381447 9   
{"catalogNumber": "1381447", "order": "Poales", "family": "", "scientificName": "Carex opaca", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W.H. Shepherd", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Arkansas", "county": "", "municipality": "", "locality": "Railroad Prairie Natural Area, east of Carlisle, N of US Hwy 70 & S of old Railroad bed, just E of a N-S Gravel Rd.", "decimalLatitude": "34.783557", "decimalLongitude": "-91.691344", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}