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": ""}
1221660 :    G4:V6 SYLVIA M. TAYLOR      Zel@S BETULACEAE   c NEXT TO QUERCUS RUBRA. (COMMON THROUGHOUT WOODS.)    WASHTENAW xDx   [approx. coordinates are for 20 m ne of the dedication rock.] nP        y$7 UNITED STATES   v6xn 1970-06-15    
{"catalogNumber": "1221660", "order": "", "family": "Betulaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Sylvia M. Taylor", "recordNumber": "", "verbatimEventDate": "1970-06-15", "habitat": "Next to Quercus rubra. (Common throughout woods.)", "occurrenceRemarks": "[Approx. coordinates are for 20 m NE of the dedication rock.]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Washtenaw", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}