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": ""}
"tree 30 ft. tall" u_   H alleghaniensis     ] Britton CHARLES D. RICHARDS `  -88.313239 A I  47.372862 54B    3M  2982  W54 + Rich woods. keweenaw (  8ETULA s7 G   1950-06-09 -      zSKM at cliff mine site.      YX MICHIGAN  Betula alleghaniensis      Fagales _p   
{"catalogNumber": "", "order": "Fagales", "family": "", "scientificName": "Betula alleghaniensis", "scientificNameAuthorship": "Britton", "genus": "Betula", "subgenus": "", "specificEpithet": "alleghaniensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "2982", "verbatimEventDate": "1950-06-09", "habitat": "Rich woods.", "occurrenceRemarks": "\"Tree 30 ft. tall\"", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Keweenaw", "municipality": "", "locality": "At Cliff Mine site.", "decimalLatitude": "47.372862", "decimalLongitude": "-88.313239", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}