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": ""}
41.98833h Val  Branch 7$rR  1941-06-16 [IQWh   u: ARACEAE -85.02917     `V- e.w. roelofs  4) + SPIRODELA POLYRHIZA  Gg United States 1474484  /e  93 (5%L    2EJ "commnon" MORRISON LAKE. t    pa  MICHIGAN spirodela  O W3  polyrhiza 7     ALISMATALES ED&=M     U (l.) schleid.   
{"catalogNumber": "1474484", "order": "Alismatales", "family": "Araceae", "scientificName": "Spirodela polyrhiza", "scientificNameAuthorship": "(L.) Schleid.", "genus": "Spirodela", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "E.W. Roelofs", "recordNumber": "93", "verbatimEventDate": "1941-06-16", "habitat": "", "occurrenceRemarks": "\"Common\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Branch", "municipality": "", "locality": "Morrison Lake.", "decimalLatitude": "41.98833", "decimalLongitude": "-85.02917", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}