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": ""}
    7 emersum                W  sparganium emersum 1973-08-05 @  ?L     (O/ CA . 13-14 KM DUE WNW OF COLDWELL ALONG HIGHWAY y17; AT W END OF RIPPLE LAXE; TWP 80   Y8L Robert R. Haynes  hE ABUNDANT CANADA _(  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Sparganium emersum", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "emersum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert R. Haynes", "recordNumber": "", "verbatimEventDate": "1973-08-05", "habitat": "", "occurrenceRemarks": "abundant", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "", "municipality": "", "locality": "ca. 13-14 km due WNW of Coldwell along highway 17; at W end of Ripple Lake; Twp 80", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}