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": ""}
 $-R 44.66528 SPIRODELA 0dL3      D united states RIVER LAKE, NEAR INLET OF EAST BRANCHAU SABLE RIVER, 0.05 MI. W OF KINNEY OAD AND 0.7 MI. N OF COUNTY ROAD 612. xuXF     (L.) Schleid. J       b Alismatales  Submergent Marsh; Floating on =surface at lake edge, full sun. Common. "Assoc.: Myiobhyllum verticillatum, Nuphar variegata, Certaophyllum demersu m" [+ a little Lemna minor] !^  1142 +3e   =W POLYRHIZA    ZI>g  1992-09-24    
{"catalogNumber": "", "order": "Alismatales", "family": "", "scientificName": "", "scientificNameAuthorship": "(L.) Schleid.", "genus": "Spirodela", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "1142", "verbatimEventDate": "1992-09-24", "habitat": "Submergent Marsh; Floating on surface at lake edge, full sun. Common. \"Assoc.: Myiophyllum verticillatum, Nuphar variegata, Certaophyllum demersum\" [+ a little Lemna minor]", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "River Lake, near inlet of East Branch Au Sable River, 0.05 mi. W of Kinney Road and 0.7 mi. N of county Road 612.", "decimalLatitude": "44.66528", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}