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": ""}
   W. ALAN WENTZ Ku  united states :   iridaceae u7_=w      q^ 1973-06-20  ~xSkK virginica  !TTQ IRIS VIRGINICA  y&qW  common in many parts of the marsh.        $ iris    MM:kk -84.830439   Z[- L.   i@a 44.289841
{"catalogNumber": "", "order": "", "family": "Iridaceae", "scientificName": "Iris virginica", "scientificNameAuthorship": "L.", "genus": "Iris", "subgenus": "", "specificEpithet": "virginica", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. Alan Wentz", "recordNumber": "", "verbatimEventDate": "1973-06-20", "habitat": "Common in many parts of the marsh.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "44.289841", "decimalLongitude": "-84.830439", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}