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": ""}
 1992-06-18 xwqT   9: Disturbed area in Dry Northern Forest; Disturbed, dry, sand around abandoned bunker, full sun. Common. CALYSTEGIA /    (L.) PURSH z/N       "Corolla white, leaves gray-gre9en." "Assoc.: Comptonia peregrina, Pteridium aquilinum, Hieracium aurantiacum, Danthonia specata"      United States k]          @z Calystegia spithamaea    634 <o W2 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Calystegia spithamaea", "scientificNameAuthorship": "(L.) Pursh", "genus": "Calystegia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "634", "verbatimEventDate": "1992-06-18", "habitat": "Disturbed area in Dry Northern Forest; Disturbed, dry, sand around abandoned bunker, full sun. Common.", "occurrenceRemarks": "\"Corolla white, leaves gray-green.\" \"Assoc.: Comptonia peregrina, Pteridium aquilinum, Hieracium aurantiacum, Danthonia specata\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}