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": ""}
    Ann Arbor     e MICHIGAN  -83.745 6   United States uL     Gray 42.2814    j CALYSTEGIA SPITHAMAEA   JOHN WRIGHT c fb3    (L.) Pursh R3k     S.N. =   
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Calystegia spithamaea", "scientificNameAuthorship": "(L.) Pursh", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John Wright", "recordNumber": "s.n.", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Ann Arbor", "decimalLatitude": "42.2814", "decimalLongitude": "-83.7485", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}