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": ""}
United States ga^     Betula papyrifera  Qn;  -84.543994  Ng+  981 c6  papyrifera N     u4sv7 1989-05-21    >$ BETULA Frequent in acidic swampy area with Vaccimium corymbosum and Aronia meelanocarpa. eX      peter w. fritsch f`Y  Fagales DD     "Tree 12 m. tall; bark off-whit4e, peeling." ^     zC  1350728
{"catalogNumber": "1350728", "order": "Fagales", "family": "", "scientificName": "Betula papyrifera", "scientificNameAuthorship": "", "genus": "Betula", "subgenus": "", "specificEpithet": "papyrifera", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Peter W. Fritsch", "recordNumber": "981", "verbatimEventDate": "1989-05-21", "habitat": "Frequent in acidic swampy area with Vaccinium corymbosum and Aronia melanocarpa.", "occurrenceRemarks": "\"Tree 12 m. tall; bark off-white, peeling.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-84.543994", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}