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": ""}
 Duck Lake 7   1938-08-04 &I/        ^ 619   GRAMINEUS br$A  alismataTles 3    EAED potamogeton gramineus     P.Hf. ESCHMEYER 3)Qj     B MICHIGAN 1280861  qR    (p l. UNITED STATES e]xuM 
{"catalogNumber": "1280861", "order": "Alismatales", "family": "", "scientificName": "Potamogeton gramineus", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "gramineus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "P.H. Eschmeyer", "recordNumber": "619", "verbatimEventDate": "1938-08-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Duck Lake", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}