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": ""}
-83.431788 r3        R iosco       E<  populus tremuloides   U  tremuloides   %-j FREQUENT SMALL TREE ALONG DRY SANDY FIELD.  _Q   salicaceae    c michigan POPULUS h      =A John V. Freudenstein  Y Mwalpighiales  
{"catalogNumber": "", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Populus tremuloides", "scientificNameAuthorship": "", "genus": "Populus", "subgenus": "", "specificEpithet": "tremuloides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John V. Freudenstein", "recordNumber": "", "verbatimEventDate": "", "habitat": "Frequent small tree along dry sandy field.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Iosco", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-83.431788", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}