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": ""}
 1897-06+-30 vo #   i p B s.n. magnoliaceae rU    /S<W near port huron         F% 42.97086    L.Oqe   b7..W ST. CLAIR     0Cn Lriodendron   Q> d Michigan  at present infrequent, formerly more abundant G k> 
{"catalogNumber": "", "order": "", "family": "Magnoliaceae", "scientificName": "", "scientificNameAuthorship": "L.", "genus": "Liriodendron", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1897-06-30", "habitat": "", "occurrenceRemarks": "At present infrequent, formerly more abundant", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "St. Clair", "municipality": "", "locality": "Near Port Huron", "decimalLatitude": "42.97086", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}