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": ""}
[this almus incana subsp. rugosa specimen with inactive barcode number 1434840 is on an a. incana subsp. rugosa specimen sheet with active barcode number 1434839.] ?6 /   xT GRAVELLY BANKS.  4 Betulaceae   W3p` merritt l. fernld & harley h. bartlett incana v(0&r  ALNUS 9+      F7 WES&T CAMBRIDGE. SUBSP. O  (X   ) rugosa (DU ROI) R.T. CLAUSEN h-)   7L 1906-10-01   ,vH0  4   FAGALES [QJC  1434840 `x&%9    u Middlesex  *02t  alnus incana subsp. rugosa   UNITED STATES 5( 
{"catalogNumber": "1434840", "order": "Fagales", "family": "Betulaceae", "scientificName": "Alnus incana subsp. rugosa", "scientificNameAuthorship": "(Du Roi) R.T. Clausen", "genus": "Alnus", "subgenus": "", "specificEpithet": "incana", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "rugosa", "identifiedBy": "", "recordedBy": "Merritt L. Fernald & Harley H. Bartlett", "recordNumber": "4", "verbatimEventDate": "1906-10-01", "habitat": "Gravelly banks.", "occurrenceRemarks": "[This Alnus incana subsp. rugosa specimen with inactive barcode number 1434840 is on an A. incana subsp. rugosa specimen sheet with active barcode number 1434839.]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Middlesex", "municipality": "", "locality": "West Cambridge.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}