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": ""}
 1931-07-04 Qd    BWL4 4789  E -84.674318   iSbty IRIS    e<S virginica   LBGLd (small) e.s. anderson  MICHIGAN u8         r#U8 45.538552     k Irid|aceae  M UNITED STATES JOHN H. EHLERS q6VOE 
{"catalogNumber": "", "order": "", "family": "Iridaceae", "scientificName": "", "scientificNameAuthorship": "(Small) E.S. Anderson", "genus": "Iris", "subgenus": "", "specificEpithet": "virginica", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "4789", "verbatimEventDate": "1931-07-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "45.538552", "decimalLongitude": "-84.674318", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}