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": ""}
    1930-07-29      *O#p CYPERACEAE    b Eleocharis palustris    gr United S7ates  k0%H Henry K. Svenson  -88.656107 M   michigan ?,     3470 Y.=@6     5DJ "aquatic creeping rootstalk"  KEWEENAW +$  
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "Eleocharis palustris", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Henry K. Svenson", "recordedBy": "", "recordNumber": "3470", "verbatimEventDate": "1930-07-29", "habitat": "", "occurrenceRemarks": "\"aquatic creeping rootstalk\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Keweenaw", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-88.656107", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}