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": ""}
    a, CA. Â¼ MILE SE OF READY LAKE.   r 1463394 AMELANCHIER N gk       ID 1976-07-21          SCATTERED PLANTS UNDER A FAIRLY OPEN RED MAPLE STAND WITH DRYOPTERIS SPINULOSA AND SUGAR MAPLE SEEDLINGS. Fcy)G     arborea xUVaE  
{"catalogNumber": "1463394", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Amelanchier", "subgenus": "", "specificEpithet": "arborea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1976-07-21", "habitat": "Scattered plants under a fairly open red maple stand with Dryopteris spinulosa and sugar maple seedlings.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "ca. \u00c2\u00bc mile SE of Ready Lake.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}