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": ""}
  -88.512702  50    1930-07-18 un_          W SEDGE MAT   48S~ isle royale, tokin harbor, moose lake          KEWEENAW     V!  (Pursh) Lindl. ex L. C. Beck  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "(Pursh) Lindl. ex L. C. Beck", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1930-07-18", "habitat": "sedge mat", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Keweenaw", "municipality": "", "locality": "Isle Royale, Tokin Harbor, Moose Lake", "decimalLatitude": "", "decimalLongitude": "-88.512702", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}