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": ""}
populus balsamifera ^]:  -84.137195 .   Populus eFKz    44.486304 Ha97       c?9 1984-06-13  l. 6  ogemaw +? L    FY MICHIGAN     balsamifera  KJ-      K?Ka John V. FTreudenstein 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Populus balsamifera", "scientificNameAuthorship": "L.", "genus": "Populus", "subgenus": "", "specificEpithet": "balsamifera", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John V. Freudenstein", "recordNumber": "", "verbatimEventDate": "1984-06-13", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Ogemaw", "municipality": "", "locality": "", "decimalLatitude": "44.486304", "decimalLongitude": "-84.137195", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}