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": ""}
  yRp Iris virginica var. shrevei   eft 1936-06-18      =5M midland  ErZ virginica  Z  shrevei        x, iris    u 8736 var. l    U|sx 43.5901 Boy Scout cabin on Chippewa River. >b[)+     
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Iris virginica var. shrevei", "scientificNameAuthorship": "", "genus": "Iris", "subgenus": "", "specificEpithet": "virginica", "verbatimTaxonRank": "var.", "infraspecificEpithet": "shrevei", "identifiedBy": "", "recordedBy": "", "recordNumber": "8736", "verbatimEventDate": "1936-06-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Midland", "municipality": "", "locality": "Boy Scout cabin on Chippewa River.", "decimalLatitude": "43.5901", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}