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": ""}
   UNITED STATES R%.3    +  SCHKUHR EX WInLLD.    Xs carex umbellata    Is3M 6160     f 1995-03-18    Abk? PHILIP E. HYATT & SHEILA HYATT  `yQ rArkansas  1390733 $?  South side of El Dorado, at intersection of US Hwy 167 & 82 on island north of 82 & south of its off ramp. [[Y5    |@ umbellata  
{"catalogNumber": "1390733", "order": "", "family": "", "scientificName": "Carex umbellata", "scientificNameAuthorship": "Schkuhr ex Willd.", "genus": "", "subgenus": "", "specificEpithet": "umbellata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Philip E. Hyatt & Sheila Hyatt", "recordNumber": "6160", "verbatimEventDate": "1995-03-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arkansas", "county": "", "municipality": "", "locality": "South side of El Dorado, at intersection of US Hwy 167 & 82 on island north of 82 & south of its off ramp.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}