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": ""}
1281285 OBRg  in cove, about 3 feet of water. 4 w    44.49289  nTT     CA_ t24n r9e sec 7 outh of pine river, van ettan lake.  UNITED STATES *u      n4tans :W     Potamogeton natans Et    L. aDp     @K] iosco   John V. Freudenstein & Thomas A. Freudenstein 1: 
{"catalogNumber": "1281285", "order": "", "family": "", "scientificName": "Potamogeton natans", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "natans", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John V. Freudenstein & Thomas A. Freudenstein", "recordNumber": "", "verbatimEventDate": "", "habitat": "In cove, about 3 feet of water.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Iosco", "municipality": "", "locality": "T24N R9E Sec 7 Mouth of Pine River, Van Ettan Lake.", "decimalLatitude": "44.49289", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}