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": ""}
  1999-05-17 yu   (1 umbellata  UniTted States 0, s         Poales  3, g  1390596 9V    +y CAREX UMBELLATA   PHILIP E. HYATT r-  8345 r     schkuhr ex willd.  i?  
{"catalogNumber": "1390596", "order": "Poales", "family": "", "scientificName": "Carex umbellata", "scientificNameAuthorship": "Schkuhr ex Willd.", "genus": "", "subgenus": "", "specificEpithet": "umbellata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Philip E. Hyatt", "recordNumber": "8345", "verbatimEventDate": "1999-05-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}